22697531 has 2 divisors, whose sum is σ = 22697532. Its totient is φ = 22697530.

The previous prime is 22697513. The next prime is 22697537. The reversal of 22697531 is 13579622.

Together with previous prime (22697513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22697531 - 2¹⁴ = 22681147 is a prime.

It is a super-2 number, since 2×22697531² = 1030355826991922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22697491 and 22697500.

It is not a weakly prime, because it can be changed into another prime (22697537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11348765 + 11348766.

It is an arithmetic number, because the mean of its divisors is an integer number (11348766).

Almost surely, 2^22697531 is an apocalyptic number.

22697531 is a deficient number, since it is larger than the sum of its proper divisors (1).

22697531 is an equidigital number, since it uses as much as digits as its factorization.

22697531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 22697531 is about 4764.1925863676. The cubic root of 22697531 is about 283.1345529218.

The spelling of 22697531 in words is "twenty-two million, six hundred ninety-seven thousand, five hundred thirty-one".