1231335440252 has 6 divisors (see below), whose sum is σ = 2154837020448. Its totient is φ = 615667720124.

The previous prime is 1231335440239. The next prime is 1231335440267. The reversal of 1231335440252 is 2520445331321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153916930028 + ... + 153916930035.

It is an arithmetic number, because the mean of its divisors is an integer number (359139503408).

Almost surely, 2^{1231335440252} is an apocalyptic number.

It is an amenable number.

1231335440252 is a deficient number, since it is larger than the sum of its proper divisors (923501580196).

1231335440252 is a wasteful number, since it uses less digits than its factorization.

1231335440252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307833860067 (or 307833860065 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The spelling of 1231335440252 in words is "one trillion, two hundred thirty-one billion, three hundred thirty-five million, four hundred forty thousand, two hundred fifty-two".