31315113021542 has 16 divisors (see below), whose sum is σ = 53937472941312. Its totient is φ = 13357157211720.

The previous prime is 31315113021421. The next prime is 31315113021559. The reversal of 31315113021542 is 24512031151313.

It is a junction number, because it is equal to n+sod(n) for n = 31315113021499 and 31315113021508.

It is a congruent number.

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, 5300456258 + ... + 5300462165.

It is an arithmetic number, because the mean of its divisors is an integer number (3371092058832).

Almost surely, 2^{31315113021542} is an apocalyptic number.

31315113021542 is a deficient number, since it is larger than the sum of its proper divisors (22622359919770).

31315113021542 is a wasteful number, since it uses less digits than its factorization.

31315113021542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600918643.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 31315113021542 its reverse (24512031151313), we get a palindrome (55827144172855).

The spelling of 31315113021542 in words is "thirty-one trillion, three hundred fifteen billion, one hundred thirteen million, twenty-one thousand, five hundred forty-two".