231444231312420 has 144 divisors (see below), whose sum is σ = 802343793433728. Its totient is φ = 52901288593920.

The previous prime is 231444231312409. The next prime is 231444231312433. The reversal of 231444231312420 is 24213132444132.

231444231312420 is a `hidden beast` number, since 2 + 31 + 4 + 44 + 231 + 312 + 42 + 0 = 666.

231444231312420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 460388400 + ... + 460890840.

Almost surely, 2^{231444231312420} is an apocalyptic number.

231444231312420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231444231312420 is an abundant number, since it is smaller than the sum of its proper divisors (570899562121308).

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

231444231312420 is a wasteful number, since it uses less digits than its factorization.

231444231312420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868050 (or 868045 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 231444231312420 its reverse (24213132444132), we get a palindrome (255657363756552).

The spelling of 231444231312420 in words is "two hundred thirty-one trillion, four hundred forty-four billion, two hundred thirty-one million, three hundred twelve thousand, four hundred twenty".