31120112330 has 16 divisors (see below), whose sum is σ = 57382451784. Its totient is φ = 12144433920.

The previous prime is 31120112299. The next prime is 31120112341. The reversal of 31120112330 is 3321102113.

It can be written as a sum of positive squares in 4 ways, for example, as 7082400649 + 24037711681 = 84157^2 + 155041^2 .

It is a super-2 number, since 2×31120112330² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31120112299 and 31120112308.

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, 37950947 + ... + 37951766.

Almost surely, 2^31120112330 is an apocalyptic number.

31120112330 is a deficient number, since it is larger than the sum of its proper divisors (26262339454).

31120112330 is a wasteful number, since it uses less digits than its factorization.

31120112330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75902761.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31120112330 its reverse (3321102113), we get a palindrome (34441214443).

The spelling of 31120112330 in words is "thirty-one billion, one hundred twenty million, one hundred twelve thousand, three hundred thirty".