213880531 has 2 divisors, whose sum is σ = 213880532. Its totient is φ = 213880530.

The previous prime is 213880523. The next prime is 213880567. The reversal of 213880531 is 135088312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213880531 - 2³ = 213880523 is a prime.

It is a super-2 number, since 2×213880531² = 91489763081683922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 213880493 and 213880502.

It is not a weakly prime, because it can be changed into another prime (213880591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106940265 + 106940266.

It is an arithmetic number, because the mean of its divisors is an integer number (106940266).

Almost surely, 2^213880531 is an apocalyptic number.

213880531 is a deficient number, since it is larger than the sum of its proper divisors (1).

213880531 is an equidigital number, since it uses as much as digits as its factorization.

213880531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 213880531 is about 14624.6549019114. The cubic root of 213880531 is about 598.0310746595.

The spelling of 213880531 in words is "two hundred thirteen million, eight hundred eighty thousand, five hundred thirty-one".