31230413072 has 20 divisors (see below), whose sum is σ = 61984754076. Its totient is φ = 15234347520.

The previous prime is 31230413041. The next prime is 31230413101. The reversal of 31230413072 is 27031403213.

It can be written as a sum of positive squares in 2 ways, for example, as 473671696 + 30756741376 = 21764^2 + 175376^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23803013 + ... + 23804324.

Almost surely, 2^31230413072 is an apocalyptic number.

It is an amenable number.

31230413072 is a deficient number, since it is larger than the sum of its proper divisors (30754341004).

31230413072 is a wasteful number, since it uses less digits than its factorization.

31230413072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47607386 (or 47607380 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 31230413072 its reverse (27031403213), we get a palindrome (58261816285).

The spelling of 31230413072 in words is "thirty-one billion, two hundred thirty million, four hundred thirteen thousand, seventy-two".