8401249131 has 12 divisors (see below), whose sum is σ = 12312575016. Its totient is φ = 5091665920.

The previous prime is 8401249111. The next prime is 8401249189. The reversal of 8401249131 is 1319421048.

It is a happy number.

It is not a de Polignac number, because 8401249131 - 2⁹ = 8401248619 is a prime.

It is a super-2 number, since 2×8401249131² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 8401249092 and 8401249101.

It is not an unprimeable number, because it can be changed into a prime (8401249111) 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, 11571606 + ... + 11572331.

It is an arithmetic number, because the mean of its divisors is an integer number (1026047918).

Almost surely, 2^8401249131 is an apocalyptic number.

8401249131 is a deficient number, since it is larger than the sum of its proper divisors (3911325885).

8401249131 is a wasteful number, since it uses less digits than its factorization.

8401249131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23143962 (or 23143951 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 8401249131 is about 91658.3282140799. The cubic root of 8401249131 is about 2032.8934715083.

The spelling of 8401249131 in words is "eight billion, four hundred one million, two hundred forty-nine thousand, one hundred thirty-one".