401323140431140 has 24 divisors (see below), whose sum is σ = 854323507167480. Its totient is φ = 158330225265408.

The previous prime is 401323140431137. The next prime is 401323140431149. The reversal of 401323140431140 is 41134041323104.

It can be written as a sum of positive squares in 4 ways, for example, as 12162614400036 + 389160526031104 = 3487494^2 + 19727152^2 .

It is a super-2 number, since 2×401323140431140² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401323140431149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137439430195 + ... + 137439433114.

It is an arithmetic number, because the mean of its divisors is an integer number (35596812798645).

Almost surely, 2^{401323140431140} is an apocalyptic number.

It is an amenable number.

401323140431140 is an abundant number, since it is smaller than the sum of its proper divisors (453000366736340).

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

401323140431140 is a wasteful number, since it uses less digits than its factorization.

401323140431140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274878863391 (or 274878863389 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 401323140431140 its reverse (41134041323104), we get a palindrome (442457181754244).

The spelling of 401323140431140 in words is "four hundred one trillion, three hundred twenty-three billion, one hundred forty million, four hundred thirty-one thousand, one hundred forty".