14138491731 has 32 divisors (see below), whose sum is σ = 23695300608. Its totient is φ = 7298985600.

The previous prime is 14138491699. The next prime is 14138491739. The reversal of 14138491731 is 13719483141.

It is not a de Polignac number, because 14138491731 - 2⁵ = 14138491699 is a prime.

It is a super-2 number, since 2×14138491731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (14138491739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 538120 + ... + 563781.

It is an arithmetic number, because the mean of its divisors is an integer number (740478144).

Almost surely, 2^14138491731 is an apocalyptic number.

14138491731 is a deficient number, since it is larger than the sum of its proper divisors (9556808877).

14138491731 is a wasteful number, since it uses less digits than its factorization.

14138491731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101971.

The product of its digits is 72576, while the sum is 42.

The spelling of 14138491731 in words is "fourteen billion, one hundred thirty-eight million, four hundred ninety-one thousand, seven hundred thirty-one".