213431398 has 12 divisors (see below), whose sum is σ = 334673388. Its totient is φ = 102075380.

The previous prime is 213431369. The next prime is 213431417. The reversal of 213431398 is 893134312.

213431398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99808 + ... + 101923.

It is an arithmetic number, because the mean of its divisors is an integer number (27889449).

Almost surely, 2^213431398 is an apocalyptic number.

213431398 is a deficient number, since it is larger than the sum of its proper divisors (121241990).

213431398 is a wasteful number, since it uses less digits than its factorization.

213431398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201779 (or 201756 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 213431398 is about 14609.2914954833. The cubic root of 213431398 is about 597.6121745705.

The spelling of 213431398 in words is "two hundred thirteen million, four hundred thirty-one thousand, three hundred ninety-eight".