Search a number
-
+
31088910132 = 22337197927397
BaseRepresentation
bin11100111101000010…
…110001111100110100
32222020122021021021000
4130331002301330310
51002132230111012
622140531123300
72150261242650
oct347502617464
988218237230
1031088910132
1112203974365
126037743530
132c15b62117
14170ccdba60
15c1e51dddc
hex73d0b1f34

31088910132 has 192 divisors, whose sum is σ = 98194432000. Its totient is φ = 8308220544.

The previous prime is 31088910109. The next prime is 31088910143. The reversal of 31088910132 is 23101988013.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1121058 + ... + 1148454.

Almost surely, 231088910132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31088910132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49097216000).

31088910132 is an abundant number, since it is smaller than the sum of its proper divisors (67105521868).

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

31088910132 is a wasteful number, since it uses less digits than its factorization.

31088910132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27515 (or 27507 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 31088910132 in words is "thirty-one billion, eighty-eight million, nine hundred ten thousand, one hundred thirty-two".