31111213130 has 16 divisors (see below), whose sum is σ = 58947562080. Its totient is φ = 11789512272.

The previous prime is 31111213117. The next prime is 31111213153. The reversal of 31111213130 is 3131211113.

It is a junction number, because it is equal to n+sod(n) for n = 31111213099 and 31111213108.

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, 81871424 + ... + 81871803.

It is an arithmetic number, because the mean of its divisors is an integer number (3684222630).

Almost surely, 2^31111213130 is an apocalyptic number.

31111213130 is a deficient number, since it is larger than the sum of its proper divisors (27836348950).

31111213130 is a wasteful number, since it uses less digits than its factorization.

31111213130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163743253.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 31111213130 its reverse (3131211113), we get a palindrome (34242424243).

The spelling of 31111213130 in words is "thirty-one billion, one hundred eleven million, two hundred thirteen thousand, one hundred thirty".