10400131 has 4 divisors (see below), whose sum is σ = 11885872. Its totient is φ = 8914392.

The previous prime is 10400129. The next prime is 10400147. The reversal of 10400131 is 13100401.

It is a happy number.

10400131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 10400131 - 2¹ = 10400129 is a prime.

It is a super-2 number, since 2×10400131² = 216325449634322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10400161) 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, 742860 + ... + 742873.

It is an arithmetic number, because the mean of its divisors is an integer number (2971468).

Almost surely, 2^10400131 is an apocalyptic number.

10400131 is a deficient number, since it is larger than the sum of its proper divisors (1485741).

10400131 is an equidigital number, since it uses as much as digits as its factorization.

10400131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485740.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 10400131 is about 3224.9234099433. The cubic root of 10400131 is about 218.2794930986.

Adding to 10400131 its reverse (13100401), we get a palindrome (23500532).

The spelling of 10400131 in words is "ten million, four hundred thousand, one hundred thirty-one".