31225499052 has 24 divisors (see below), whose sum is σ = 79483088832. Its totient is φ = 9462272400.

The previous prime is 31225499051. The next prime is 31225499069. The reversal of 31225499052 is 25099452213.

It is a super-3 number, since 3×31225499052³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31225498995 and 31225499013.

It is not an unprimeable number, because it can be changed into a prime (31225499051) 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 7 ways as a sum of consecutive naturals, for example, 118278274 + ... + 118278537.

It is an arithmetic number, because the mean of its divisors is an integer number (3311795368).

Almost surely, 2^31225499052 is an apocalyptic number.

It is an amenable number.

31225499052 is an abundant number, since it is smaller than the sum of its proper divisors (48257589780).

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

31225499052 is a wasteful number, since it uses less digits than its factorization.

31225499052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236556829 (or 236556827 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 31225499052 in words is "thirty-one billion, two hundred twenty-five million, four hundred ninety-nine thousand, fifty-two".