31313111132 has 6 divisors (see below), whose sum is σ = 54797944488. Its totient is φ = 15656555564.

The previous prime is 31313111131. The next prime is 31313111231. The reversal of 31313111132 is 23111131313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313111131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3914138888 + ... + 3914138895.

It is an arithmetic number, because the mean of its divisors is an integer number (9132990748).

Almost surely, 2^31313111132 is an apocalyptic number.

It is an amenable number.

31313111132 is a deficient number, since it is larger than the sum of its proper divisors (23484833356).

31313111132 is a wasteful number, since it uses less digits than its factorization.

31313111132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7828277787 (or 7828277785 counting only the distinct ones).

The product of its digits is 162, while the sum is 20.

Adding to 31313111132 its reverse (23111131313), we get a palindrome (54424242445).

The spelling of 31313111132 in words is "thirty-one billion, three hundred thirteen million, one hundred eleven thousand, one hundred thirty-two".