31540403332 has 48 divisors (see below), whose sum is σ = 60962428800. Its totient is φ = 14211521280.

The previous prime is 31540403303. The next prime is 31540403339. The reversal of 31540403332 is 23330404513.

It is a self number, because there is not a number n which added to its sum of digits gives 31540403332.

It is not an unprimeable number, because it can be changed into a prime (31540403339) 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 15 ways as a sum of consecutive naturals, for example, 266544 + ... + 366232.

It is an arithmetic number, because the mean of its divisors is an integer number (1270050600).

Almost surely, 2^31540403332 is an apocalyptic number.

It is an amenable number.

31540403332 is a deficient number, since it is larger than the sum of its proper divisors (29422025468).

31540403332 is a wasteful number, since it uses less digits than its factorization.

31540403332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99916 (or 99914 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 28.

Adding to 31540403332 its reverse (23330404513), we get a palindrome (54870807845).

The spelling of 31540403332 in words is "thirty-one billion, five hundred forty million, four hundred three thousand, three hundred thirty-two".