10931999907 has 4 divisors (see below), whose sum is σ = 14575999880. Its totient is φ = 7287999936.

The previous prime is 10931999899. The next prime is 10931999963. The reversal of 10931999907 is 70999913901.

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

It is not a de Polignac number, because 10931999907 - 2³ = 10931999899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10931999987) 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, 1821999982 + ... + 1821999987.

It is an arithmetic number, because the mean of its divisors is an integer number (3643999970).

Almost surely, 2^10931999907 is an apocalyptic number.

10931999907 is a deficient number, since it is larger than the sum of its proper divisors (3643999973).

10931999907 is an equidigital number, since it uses as much as digits as its factorization.

10931999907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3643999972.

The product of its (nonzero) digits is 1240029, while the sum is 57.

It can be divided in two parts, 1093 and 1999907, that added together give a triangular number (2001000 = T₂₀₀₀).

The spelling of 10931999907 in words is "ten billion, nine hundred thirty-one million, nine hundred ninety-nine thousand, nine hundred seven".