31042343013100 has 72 divisors (see below), whose sum is σ = 67531254660576. Its totient is φ = 12385752000000.

The previous prime is 31042343013091. The next prime is 31042343013211. The reversal of 31042343013100 is 131034324013.

It is a super-2 number, since 2×31042343013100² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70759425 + ... + 71196775.

It is an arithmetic number, because the mean of its divisors is an integer number (937934092508).

Almost surely, 2^{31042343013100} is an apocalyptic number.

It is an amenable number.

31042343013100 is an abundant number, since it is smaller than the sum of its proper divisors (36488911647476).

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

31042343013100 is a wasteful number, since it uses less digits than its factorization.

31042343013100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439147 (or 439140 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31042343013100 its reverse (131034324013), we get a palindrome (31173377337113).

The spelling of 31042343013100 in words is "thirty-one trillion, forty-two billion, three hundred forty-three million, thirteen thousand, one hundred".