400431234252354 has 16 divisors (see below), whose sum is σ = 800869814682048. Its totient is φ = 133475853721232.

The previous prime is 400431234252331. The next prime is 400431234252391. The reversal of 400431234252354 is 453252432134004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305381982 + ... + 306690425.

It is an arithmetic number, because the mean of its divisors is an integer number (50054363417628).

Almost surely, 2^{400431234252354} is an apocalyptic number.

400431234252354 is an abundant number, since it is smaller than the sum of its proper divisors (400438580429694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400431234252354 is a wasteful number, since it uses less digits than its factorization.

400431234252354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612181449.

The product of its (nonzero) digits is 1382400, while the sum is 42.

Adding to 400431234252354 its reverse (453252432134004), we get a palindrome (853683666386358).

The spelling of 400431234252354 in words is "four hundred trillion, four hundred thirty-one billion, two hundred thirty-four million, two hundred fifty-two thousand, three hundred fifty-four".