213987532235031 has 32 divisors (see below), whose sum is σ = 325774512841920. Its totient is φ = 138722628592512.

The previous prime is 213987532235021. The next prime is 213987532235083. The reversal of 213987532235031 is 130532235789312.

213987532235031 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 8 + 7 + 532 + 23 + 50 + 31 = 666.

213987532235031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213987532235031 - 2⁵ = 213987532234999 is a prime.

It is a super-2 number, since 2×213987532235031² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213987532235021) 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, 60069580 + ... + 63532113.

It is an arithmetic number, because the mean of its divisors is an integer number (10180453526310).

Almost surely, 2^{213987532235031} is an apocalyptic number.

213987532235031 is a deficient number, since it is larger than the sum of its proper divisors (111786980606889).

213987532235031 is a wasteful number, since it uses less digits than its factorization.

213987532235031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123603472 (or 123603466 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 54.

The spelling of 213987532235031 in words is "two hundred thirteen trillion, nine hundred eighty-seven billion, five hundred thirty-two million, two hundred thirty-five thousand, thirty-one".