31203130131332 has 6 divisors (see below), whose sum is σ = 54605477729838. Its totient is φ = 15601565065664.

The previous prime is 31203130131247. The next prime is 31203130131359. The reversal of 31203130131332 is 23313103130213.

It can be written as a sum of positive squares in only one way, i.e., 22912554330436 + 8290575800896 = 4786706^2 + 2879336^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3900391266413 + ... + 3900391266420.

It is an arithmetic number, because the mean of its divisors is an integer number (9100912954973).

Almost surely, 2^{31203130131332} is an apocalyptic number.

It is an amenable number.

31203130131332 is a deficient number, since it is larger than the sum of its proper divisors (23402347598506).

31203130131332 is a wasteful number, since it uses less digits than its factorization.

31203130131332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7800782532837 (or 7800782532835 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31203130131332 its reverse (23313103130213), we get a palindrome (54516233261545).

The spelling of 31203130131332 in words is "thirty-one trillion, two hundred three billion, one hundred thirty million, one hundred thirty-one thousand, three hundred thirty-two".