31400232225 has 48 divisors (see below), whose sum is σ = 53807835840. Its totient is φ = 16144531200.

The previous prime is 31400232197. The next prime is 31400232229. The reversal of 31400232225 is 52223200413.

It is not a de Polignac number, because 31400232225 - 2²¹ = 31398135073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31400232195 and 31400232204.

It is not an unprimeable number, because it can be changed into a prime (31400232229) 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 47 ways as a sum of consecutive naturals, for example, 250570 + ... + 354380.

It is an arithmetic number, because the mean of its divisors is an integer number (1120996580).

Almost surely, 2^31400232225 is an apocalyptic number.

It is an amenable number.

31400232225 is a deficient number, since it is larger than the sum of its proper divisors (22407603615).

31400232225 is a wasteful number, since it uses less digits than its factorization.

31400232225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103970 (or 103965 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 31400232225 its reverse (52223200413), we get a palindrome (83623432638).

The spelling of 31400232225 in words is "thirty-one billion, four hundred million, two hundred thirty-two thousand, two hundred twenty-five".