400131120323 has 16 divisors (see below), whose sum is σ = 443474013312. Its totient is φ = 360978646600.

The previous prime is 400131120307. The next prime is 400131120349. The reversal of 400131120323 is 323021131004.

It is not a de Polignac number, because 400131120323 - 2⁴ = 400131120307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400131120295 and 400131120304.

It is not an unprimeable number, because it can be changed into a prime (400131120373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973061 + ... + 1321782.

It is an arithmetic number, because the mean of its divisors is an integer number (27717125832).

Almost surely, 2^400131120323 is an apocalyptic number.

400131120323 is a deficient number, since it is larger than the sum of its proper divisors (43342892989).

400131120323 is a wasteful number, since it uses less digits than its factorization.

400131120323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295007 (or 2294985 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 400131120323 its reverse (323021131004), we get a palindrome (723152251327).

The spelling of 400131120323 in words is "four hundred billion, one hundred thirty-one million, one hundred twenty thousand, three hundred twenty-three".