31937841145 has 32 divisors (see below), whose sum is σ = 44911190016. Its totient is φ = 21348600000.

The previous prime is 31937841139. The next prime is 31937841151. The reversal of 31937841145 is 54114873913.

It is an interprime number because it is at equal distance from previous prime (31937841139) and next prime (31937841151).

It is not a de Polignac number, because 31937841145 - 2¹¹ = 31937839097 is a prime.

It is a super-2 number, since 2×31937841145² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31937841095 and 31937841104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 374220 + ... + 451570.

It is an arithmetic number, because the mean of its divisors is an integer number (1403474688).

Almost surely, 2^31937841145 is an apocalyptic number.

31937841145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31937841145 is a deficient number, since it is larger than the sum of its proper divisors (12973348871).

31937841145 is a wasteful number, since it uses less digits than its factorization.

31937841145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77661.

The product of its digits is 362880, while the sum is 46.

The spelling of 31937841145 in words is "thirty-one billion, nine hundred thirty-seven million, eight hundred forty-one thousand, one hundred forty-five".