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31420401141 = 345722917871
BaseRepresentation
bin11101010000110011…
…010100010111110101
310000002202000202102210
4131100303110113311
51003322110314031
622233452124033
72161425001023
oct352063242765
9100082022383
1031420401141
1112363aa7478
12610a766619
132c6973774c
141740d4b713
15c3d69d746
hex750cd45f5

31420401141 has 8 divisors (see below), whose sum is σ = 41985541504. Its totient is φ = 20901097440.

The previous prime is 31420401139. The next prime is 31420401143. The reversal of 31420401141 is 14110402413.

It is an interprime number because it is at equal distance from previous prime (31420401139) and next prime (31420401143).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31420401141 - 21 = 31420401139 is a prime.

It is a super-2 number, since 2×314204011412 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31420401143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11457565 + ... + 11460306.

It is an arithmetic number, because the mean of its divisors is an integer number (5248192688).

Almost surely, 231420401141 is an apocalyptic number.

It is an amenable number.

31420401141 is a deficient number, since it is larger than the sum of its proper divisors (10565140363).

31420401141 is a wasteful number, since it uses less digits than its factorization.

31420401141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22918331.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 31420401141 its reverse (14110402413), we get a palindrome (45530803554).

The spelling of 31420401141 in words is "thirty-one billion, four hundred twenty million, four hundred one thousand, one hundred forty-one".

Divisors: 1 3 457 1371 22917871 68753613 10473467047 31420401141