13880979331 has 4 divisors (see below), whose sum is σ = 13902434352. Its totient is φ = 13859524312.

The previous prime is 13880979323. The next prime is 13880979373. The reversal of 13880979331 is 13397908831.

It is a happy number.

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 13880979331 - 2³ = 13880979323 is a prime.

It is a super-2 number, since 2×13880979331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13880979391) 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, 10726540 + ... + 10727833.

It is an arithmetic number, because the mean of its divisors is an integer number (3475608588).

Almost surely, 2^13880979331 is an apocalyptic number.

13880979331 is a deficient number, since it is larger than the sum of its proper divisors (21455021).

13880979331 is an equidigital number, since it uses as much as digits as its factorization.

13880979331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21455020.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 13880979331 in words is "thirteen billion, eight hundred eighty million, nine hundred seventy-nine thousand, three hundred thirty-one".