31120030203313 has 4 divisors (see below), whose sum is σ = 31120155366768. Its totient is φ = 31119905039860.

The previous prime is 31120030203307. The next prime is 31120030203389. The reversal of 31120030203313 is 31330203002113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31120030203313 is a prime.

It is a super-2 number, since 2×31120030203313² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31120030203413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62208031 + ... + 62706292.

It is an arithmetic number, because the mean of its divisors is an integer number (7780038841692).

Almost surely, 2^{31120030203313} is an apocalyptic number.

It is an amenable number.

31120030203313 is a deficient number, since it is larger than the sum of its proper divisors (125163455).

31120030203313 is a wasteful number, since it uses less digits than its factorization.

31120030203313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125163454.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31120030203313 its reverse (31330203002113), we get a palindrome (62450233205426).

The spelling of 31120030203313 in words is "thirty-one trillion, one hundred twenty billion, thirty million, two hundred three thousand, three hundred thirteen".