213166023 has 12 divisors (see below), whose sum is σ = 330625080. Its totient is φ = 121809072.

The previous prime is 213166003. The next prime is 213166027. The reversal of 213166023 is 320661312.

It is a happy number.

It is not a de Polignac number, because 213166023 - 2¹⁴ = 213149639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213165984 and 213166002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213166027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 724908 + ... + 725201.

It is an arithmetic number, because the mean of its divisors is an integer number (27552090).

Almost surely, 2^213166023 is an apocalyptic number.

213166023 is a deficient number, since it is larger than the sum of its proper divisors (117459057).

213166023 is a wasteful number, since it uses less digits than its factorization.

213166023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450126 (or 1450119 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 213166023 is about 14600.2062656662. The cubic root of 213166023 is about 597.3643867455.

The spelling of 213166023 in words is "two hundred thirteen million, one hundred sixty-six thousand, twenty-three".