84212512431 has 16 divisors (see below), whose sum is σ = 116191682400. Its totient is φ = 54188725248.

The previous prime is 84212512411. The next prime is 84212512477. The reversal of 84212512431 is 13421521248.

It is not a de Polignac number, because 84212512431 - 2⁵ = 84212512399 is a prime.

It is a super-2 number, since 2×84212512431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84212512392 and 84212512401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84212512411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129435 + ... + 430323.

It is an arithmetic number, because the mean of its divisors is an integer number (7261980150).

Almost surely, 2^84212512431 is an apocalyptic number.

84212512431 is a deficient number, since it is larger than the sum of its proper divisors (31979169969).

84212512431 is a wasteful number, since it uses less digits than its factorization.

84212512431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304138.

The product of its digits is 15360, while the sum is 33.

The spelling of 84212512431 in words is "eighty-four billion, two hundred twelve million, five hundred twelve thousand, four hundred thirty-one".