699108131 has 4 divisors (see below), whose sum is σ = 700498512. Its totient is φ = 697717752.

The previous prime is 699108121. The next prime is 699108139. The reversal of 699108131 is 131801996.

699108131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 699108131 - 2¹⁴ = 699091747 is a prime.

It is a super-2 number, since 2×699108131² = 977504357660626322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (699108139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694436 + ... + 695441.

It is an arithmetic number, because the mean of its divisors is an integer number (175124628).

Almost surely, 2^699108131 is an apocalyptic number.

699108131 is a deficient number, since it is larger than the sum of its proper divisors (1390381).

699108131 is a wasteful number, since it uses less digits than its factorization.

699108131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390380.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 699108131 is about 26440.6529987442. The cubic root of 699108131 is about 887.5267490715.

The spelling of 699108131 in words is "six hundred ninety-nine million, one hundred eight thousand, one hundred thirty-one".