31113045425 has 48 divisors (see below), whose sum is σ = 48888668544. Its totient is φ = 19077120000.

The previous prime is 31113045419. The next prime is 31113045487. The reversal of 31113045425 is 52454031113.

It is not a de Polignac number, because 31113045425 - 2⁶ = 31113045361 is a prime.

It is a super-2 number, since 2×31113045425² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15056 + ... + 249905.

It is an arithmetic number, because the mean of its divisors is an integer number (1018513928).

Almost surely, 2^31113045425 is an apocalyptic number.

31113045425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31113045425 is a deficient number, since it is larger than the sum of its proper divisors (17775623119).

31113045425 is a wasteful number, since it uses less digits than its factorization.

31113045425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265050 (or 265045 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

Adding to 31113045425 its reverse (52454031113), we get a palindrome (83567076538).

The spelling of 31113045425 in words is "thirty-one billion, one hundred thirteen million, forty-five thousand, four hundred twenty-five".