69531131 has 2 divisors, whose sum is σ = 69531132. Its totient is φ = 69531130.

The previous prime is 69531101. The next prime is 69531167. The reversal of 69531131 is 13113596.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 69531131 - 2¹⁰ = 69530107 is a prime.

It is a super-2 number, since 2×69531131² = 9669156356278322, 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 = 69531094 and 69531103.

It is not a weakly prime, because it can be changed into another prime (69531101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34765565 + 34765566.

It is an arithmetic number, because the mean of its divisors is an integer number (34765566).

Almost surely, 2^69531131 is an apocalyptic number.

69531131 is a deficient number, since it is larger than the sum of its proper divisors (1).

69531131 is an equidigital number, since it uses as much as digits as its factorization.

69531131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 29.

The square root of 69531131 is about 8338.5329045342. The cubic root of 69531131 is about 411.2063045503.

The spelling of 69531131 in words is "sixty-nine million, five hundred thirty-one thousand, one hundred thirty-one".