1231351501552 has 10 divisors (see below), whose sum is σ = 2385743534288. Its totient is φ = 615675750768.

The previous prime is 1231351501531. The next prime is 1231351501579. The reversal of 1231351501552 is 2551051531321.

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 as a sum of consecutive naturals, namely, 38479734408 + ... + 38479734439.

Almost surely, 2^{1231351501552} is an apocalyptic number.

It is an amenable number.

1231351501552 is a deficient number, since it is larger than the sum of its proper divisors (1154392032736).

1231351501552 is an equidigital number, since it uses as much as digits as its factorization.

1231351501552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76959468855 (or 76959468849 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 1231351501552 in words is "one trillion, two hundred thirty-one billion, three hundred fifty-one million, five hundred one thousand, five hundred fifty-two".