31576542492 has 96 divisors (see below), whose sum is σ = 85551427584. Its totient is φ = 8958515200.

The previous prime is 31576542467. The next prime is 31576542499. The reversal of 31576542492 is 29424567513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31576542499) 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 31 ways as a sum of consecutive naturals, for example, 391768 + ... + 465440.

It is an arithmetic number, because the mean of its divisors is an integer number (891160704).

Almost surely, 2^31576542492 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 31576542492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42775713792).

31576542492 is an abundant number, since it is smaller than the sum of its proper divisors (53974885092).

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

31576542492 is a wasteful number, since it uses less digits than its factorization.

31576542492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73899 (or 73897 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 48.

The spelling of 31576542492 in words is "thirty-one billion, five hundred seventy-six million, five hundred forty-two thousand, four hundred ninety-two".