31401431143244 has 36 divisors (see below), whose sum is σ = 58571192227968. Its totient is φ = 14727091140000.

The previous prime is 31401431143217. The next prime is 31401431143261. The reversal of 31401431143244 is 44234113410413.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107508332 + ... + 107800019.

It is an arithmetic number, because the mean of its divisors is an integer number (1626977561888).

Almost surely, 2^{31401431143244} is an apocalyptic number.

It is an amenable number.

31401431143244 is a deficient number, since it is larger than the sum of its proper divisors (27169761084724).

31401431143244 is a wasteful number, since it uses less digits than its factorization.

31401431143244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215308494 (or 215308473 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 31401431143244 its reverse (44234113410413), we get a palindrome (75635544553657).

The spelling of 31401431143244 in words is "thirty-one trillion, four hundred one billion, four hundred thirty-one million, one hundred forty-three thousand, two hundred forty-four".