31112401000 has 32 divisors (see below), whose sum is σ = 72803020680. Its totient is φ = 12444960000.

The previous prime is 31112400989. The next prime is 31112401003. The reversal of 31112401000 is 10421113.

It can be written as a sum of positive squares in 4 ways, for example, as 9102304836 + 22010096164 = 95406^2 + 148358^2 .

It is not an unprimeable number, because it can be changed into a prime (31112401003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15555201 + ... + 15557200.

Almost surely, 2^31112401000 is an apocalyptic number.

It is an amenable number.

31112401000 is an abundant number, since it is smaller than the sum of its proper divisors (41690619680).

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

31112401000 is a wasteful number, since it uses less digits than its factorization.

31112401000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31112422 (or 31112408 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 31112401000 its reverse (10421113), we get a palindrome (31122822113).

The spelling of 31112401000 in words is "thirty-one billion, one hundred twelve million, four hundred one thousand".