1231455552342 has 16 divisors (see below), whose sum is σ = 2569994196480. Its totient is φ = 392638002152.

The previous prime is 1231455552287. The next prime is 1231455552409. The reversal of 1231455552342 is 2432555541321.

It is a junction number, because it is equal to n+sod(n) for n = 1231455552294 and 1231455552303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4461795342 + ... + 4461795617.

It is an arithmetic number, because the mean of its divisors is an integer number (160624637280).

Almost surely, 2^{1231455552342} is an apocalyptic number.

1231455552342 is an abundant number, since it is smaller than the sum of its proper divisors (1338538644138).

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

1231455552342 is a wasteful number, since it uses less digits than its factorization.

1231455552342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8923590987.

The product of its digits is 720000, while the sum is 42.

The spelling of 1231455552342 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-five million, five hundred fifty-two thousand, three hundred forty-two".