31403105515412 has 48 divisors (see below), whose sum is σ = 56988143775360. Its totient is φ = 15123435583872.

The previous prime is 31403105515393. The next prime is 31403105515423. The reversal of 31403105515412 is 21451550130413.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103680263 + ... + 103982705.

It is an arithmetic number, because the mean of its divisors is an integer number (1187252995320).

Almost surely, 2^{31403105515412} is an apocalyptic number.

It is an amenable number.

31403105515412 is a deficient number, since it is larger than the sum of its proper divisors (25585038259948).

31403105515412 is a wasteful number, since it uses less digits than its factorization.

31403105515412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304640 (or 304638 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 31403105515412 its reverse (21451550130413), we get a palindrome (52854655645825).

The spelling of 31403105515412 in words is "thirty-one trillion, four hundred three billion, one hundred five million, five hundred fifteen thousand, four hundred twelve".