31120111301012 has 6 divisors (see below), whose sum is σ = 54460194776778. Its totient is φ = 15560055650504.

The previous prime is 31120111301011. The next prime is 31120111301017. The reversal of 31120111301012 is 21010311102113.

It can be written as a sum of positive squares in only one way, i.e., 16991263226116 + 14128848074896 = 4122046^2 + 3758836^2 .

It is a super-2 number, since 2×31120111301012² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120111301011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3890013912623 + ... + 3890013912630.

It is an arithmetic number, because the mean of its divisors is an integer number (9076699129463).

Almost surely, 2^{31120111301012} is an apocalyptic number.

It is an amenable number.

31120111301012 is a deficient number, since it is larger than the sum of its proper divisors (23340083475766).

31120111301012 is a wasteful number, since it uses less digits than its factorization.

31120111301012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7780027825257 (or 7780027825255 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 31120111301012 its reverse (21010311102113), we get a palindrome (52130422403125).

The spelling of 31120111301012 in words is "thirty-one trillion, one hundred twenty billion, one hundred eleven million, three hundred one thousand, twelve".