213406004650531 has 32 divisors (see below), whose sum is σ = 267235245964800. Its totient is φ = 165558805390080.

The previous prime is 213406004650529. The next prime is 213406004650547. The reversal of 213406004650531 is 135056400604312.

It is a cyclic number.

It is not a de Polignac number, because 213406004650531 - 2¹ = 213406004650529 is a prime.

It is a super-2 number, since 2×213406004650531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213406004650031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 586803156 + ... + 587166718.

It is an arithmetic number, because the mean of its divisors is an integer number (8351101436400).

Almost surely, 2^{213406004650531} is an apocalyptic number.

213406004650531 is a deficient number, since it is larger than the sum of its proper divisors (53829241314269).

213406004650531 is a wasteful number, since it uses less digits than its factorization.

213406004650531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397099.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 213406004650531 in words is "two hundred thirteen trillion, four hundred six billion, four million, six hundred fifty thousand, five hundred thirty-one".