31123301133112 has 32 divisors (see below), whose sum is σ = 59105175940800. Its totient is φ = 15361989552000.

The previous prime is 31123301133109. The next prime is 31123301133121. The reversal of 31123301133112 is 21133110332113.

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, 660639 + ... + 7917262.

It is an arithmetic number, because the mean of its divisors is an integer number (1847036748150).

Almost surely, 2^{31123301133112} is an apocalyptic number.

It is an amenable number.

31123301133112 is a deficient number, since it is larger than the sum of its proper divisors (27981874807688).

31123301133112 is a wasteful number, since it uses less digits than its factorization.

31123301133112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8583727 (or 8583723 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 31123301133112 its reverse (21133110332113), we get a palindrome (52256411465225).

The spelling of 31123301133112 in words is "thirty-one trillion, one hundred twenty-three billion, three hundred one million, one hundred thirty-three thousand, one hundred twelve".