122690531 has 2 divisors, whose sum is σ = 122690532. Its totient is φ = 122690530.

The previous prime is 122690489. The next prime is 122690537. The reversal of 122690531 is 135096221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122690531 - 2¹⁸ = 122428387 is a prime.

It is a super-2 number, since 2×122690531² = 30105932794123922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122690494 and 122690503.

It is not a weakly prime, because it can be changed into another prime (122690537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61345265 + 61345266.

It is an arithmetic number, because the mean of its divisors is an integer number (61345266).

Almost surely, 2^122690531 is an apocalyptic number.

122690531 is a deficient number, since it is larger than the sum of its proper divisors (1).

122690531 is an equidigital number, since it uses as much as digits as its factorization.

122690531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 122690531 is about 11076.5757795449. The cubic root of 122690531 is about 496.9015468379.

The spelling of 122690531 in words is "one hundred twenty-two million, six hundred ninety thousand, five hundred thirty-one".