10400400431 has 4 divisors (see below), whose sum is σ = 10507621152. Its totient is φ = 10293179712.

The previous prime is 10400400391. The next prime is 10400400503. The reversal of 10400400431 is 13400400401.

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 10400400431 - 2¹⁰ = 10400399407 is a prime.

It is a super-2 number, since 2×10400400431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400400931) 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, 53610215 + ... + 53610408.

It is an arithmetic number, because the mean of its divisors is an integer number (2626905288).

Almost surely, 2^10400400431 is an apocalyptic number.

10400400431 is a deficient number, since it is larger than the sum of its proper divisors (107220721).

10400400431 is an equidigital number, since it uses as much as digits as its factorization.

10400400431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107220720.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 10400400431 its reverse (13400400401), we get a palindrome (23800800832).

The spelling of 10400400431 in words is "ten billion, four hundred million, four hundred thousand, four hundred thirty-one".