400431115121250 has 80 divisors (see below), whose sum is σ = 1001693615186880. Its totient is φ = 106681740360000.

The previous prime is 400431115121239. The next prime is 400431115121281. The reversal of 400431115121250 is 52121511134004.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 45935886 + ... + 53953385.

It is an arithmetic number, because the mean of its divisors is an integer number (12521170189836).

Almost surely, 2^{400431115121250} is an apocalyptic number.

400431115121250 is an abundant number, since it is smaller than the sum of its proper divisors (601262500065630).

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

400431115121250 is a wasteful number, since it uses less digits than its factorization.

400431115121250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99890365 (or 99890350 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 400431115121250 its reverse (52121511134004), we get a palindrome (452552626255254).

The spelling of 400431115121250 in words is "four hundred trillion, four hundred thirty-one billion, one hundred fifteen million, one hundred twenty-one thousand, two hundred fifty".