31120130120311 has 4 divisors (see below), whose sum is σ = 31410972457992. Its totient is φ = 30829287782632.

The previous prime is 31120130120281. The next prime is 31120130120353. The reversal of 31120130120311 is 11302103102113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31120130120311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120130120011) 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, 145421168680 + ... + 145421168893.

It is an arithmetic number, because the mean of its divisors is an integer number (7852743114498).

Almost surely, 2^{31120130120311} is an apocalyptic number.

31120130120311 is a deficient number, since it is larger than the sum of its proper divisors (290842337681).

31120130120311 is a wasteful number, since it uses less digits than its factorization.

31120130120311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290842337680.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 31120130120311 its reverse (11302103102113), we get a palindrome (42422233222424).

The spelling of 31120130120311 in words is "thirty-one trillion, one hundred twenty billion, one hundred thirty million, one hundred twenty thousand, three hundred eleven".