1388875131 has 12 divisors (see below), whose sum is σ = 2292746352. Its totient is φ = 793642896.

The previous prime is 1388875099. The next prime is 1388875133. The reversal of 1388875131 is 1315788831.

1388875131 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1388875131 - 2⁵ = 1388875099 is a prime.

It is a super-2 number, since 2×1388875131² = 3857948259020534322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1388875133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11022756 + ... + 11022881.

It is an arithmetic number, because the mean of its divisors is an integer number (191062196).

Almost surely, 2^1388875131 is an apocalyptic number.

1388875131 is a deficient number, since it is larger than the sum of its proper divisors (903871221).

1388875131 is a wasteful number, since it uses less digits than its factorization.

1388875131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22045650 (or 22045647 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 1388875131 is about 37267.6150430907. The cubic root of 1388875131 is about 1115.7178994645.

The spelling of 1388875131 in words is "one billion, three hundred eighty-eight million, eight hundred seventy-five thousand, one hundred thirty-one".