31244213513132 has 6 divisors (see below), whose sum is σ = 54677373647988. Its totient is φ = 15622106756564.

The previous prime is 31244213513119. The next prime is 31244213513167. The reversal of 31244213513132 is 23131531244213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31244213513092 and 31244213513101.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3905526689138 + ... + 3905526689145.

It is an arithmetic number, because the mean of its divisors is an integer number (9112895607998).

Almost surely, 2^{31244213513132} is an apocalyptic number.

It is an amenable number.

31244213513132 is a deficient number, since it is larger than the sum of its proper divisors (23433160134856).

31244213513132 is a wasteful number, since it uses less digits than its factorization.

31244213513132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7811053378287 (or 7811053378285 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

Adding to 31244213513132 its reverse (23131531244213), we get a palindrome (54375744757345).

The spelling of 31244213513132 in words is "thirty-one trillion, two hundred forty-four billion, two hundred thirteen million, five hundred thirteen thousand, one hundred thirty-two".