400403222131 has 4 divisors (see below), whose sum is σ = 436803515064. Its totient is φ = 364002929200.

The previous prime is 400403222117. The next prime is 400403222183. The reversal of 400403222131 is 131222304004.

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 400403222131 - 2¹³ = 400403213939 is a prime.

It is a super-2 number, since 2×400403222131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400403252131) 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, 18200146450 + ... + 18200146471.

It is an arithmetic number, because the mean of its divisors is an integer number (109200878766).

Almost surely, 2^400403222131 is an apocalyptic number.

400403222131 is a deficient number, since it is larger than the sum of its proper divisors (36400292933).

400403222131 is a wasteful number, since it uses less digits than its factorization.

400403222131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36400292932.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 400403222131 its reverse (131222304004), we get a palindrome (531625526135).

The spelling of 400403222131 in words is "four hundred billion, four hundred three million, two hundred twenty-two thousand, one hundred thirty-one".