31401362552 has 32 divisors (see below), whose sum is σ = 68236369920. Its totient is φ = 13268179680.

The previous prime is 31401362477. The next prime is 31401362561. The reversal of 31401362552 is 25526310413.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 3944888 + ... + 3952839.

It is an arithmetic number, because the mean of its divisors is an integer number (2132386560).

Almost surely, 2^31401362552 is an apocalyptic number.

It is an amenable number.

31401362552 is an abundant number, since it is smaller than the sum of its proper divisors (36835007368).

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

31401362552 is a wasteful number, since it uses less digits than its factorization.

31401362552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7897811 (or 7897807 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

Adding to 31401362552 its reverse (25526310413), we get a palindrome (56927672965).

The spelling of 31401362552 in words is "thirty-one billion, four hundred one million, three hundred sixty-two thousand, five hundred fifty-two".