1231023101308 has 96 divisors (see below), whose sum is σ = 2935645751808. Its totient is φ = 436117651200.

The previous prime is 1231023101153. The next prime is 1231023101323. The reversal of 1231023101308 is 8031013201321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2026123 + ... + 2562658.

It is an arithmetic number, because the mean of its divisors is an integer number (30579643248).

Almost surely, 2^{1231023101308} is an apocalyptic number.

It is an amenable number.

1231023101308 is an abundant number, since it is smaller than the sum of its proper divisors (1704622650500).

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

1231023101308 is a wasteful number, since it uses less digits than its factorization.

1231023101308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4588883 (or 4588881 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 1231023101308 its reverse (8031013201321), we get a palindrome (9262036302629).

It can be divided in two parts, 1231023 and 101308, that added together give a palindrome (1332331).

The spelling of 1231023101308 in words is "one trillion, two hundred thirty-one billion, twenty-three million, one hundred one thousand, three hundred eight".