Search a number
-
+
31005360102 = 23195937912163
BaseRepresentation
bin11100111000000100…
…000011111111100110
32222000211001111011110
4130320010003333212
51001444333010402
622124344245450
72145225132603
oct347004037746
988024044143
1031005360102
1112170798a52
126013770886
132c0175ac32
141701b8d6aa
15c1701856c
hex738103fe6

31005360102 has 64 divisors (see below), whose sum is σ = 66561408000. Its totient is φ = 9599028768.

The previous prime is 31005360101. The next prime is 31005360103. The reversal of 31005360102 is 20106350013.

It is an interprime number because it is at equal distance from previous prime (31005360101) and next prime (31005360103).

It is a super-2 number, since 2×310053601022 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31005360101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2543073 + ... + 2555235.

It is an arithmetic number, because the mean of its divisors is an integer number (1040022000).

Almost surely, 231005360102 is an apocalyptic number.

31005360102 is an abundant number, since it is smaller than the sum of its proper divisors (35556047898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31005360102 is a wasteful number, since it uses less digits than its factorization.

31005360102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12625.

The product of its (nonzero) digits is 540, while the sum is 21.

The spelling of 31005360102 in words is "thirty-one billion, five million, three hundred sixty thousand, one hundred two".

Divisors: 1 2 3 6 19 38 57 59 114 118 177 354 379 758 1121 1137 2242 2274 3363 6726 7201 12163 14402 21603 22361 24326 36489 43206 44722 67083 72978 134166 231097 424859 462194 693291 717617 849718 1274577 1386582 1435234 2152851 2549154 4305702 4609777 9219554 13634723 13829331 27269446 27658662 40904169 81808338 87585763 175171526 262757289 271976843 525514578 543953686 815930529 1631861058 5167560017 10335120034 15502680051 31005360102