31112243030 has 32 divisors (see below), whose sum is σ = 61930039968. Its totient is φ = 11158560000.

The previous prime is 31112243003. The next prime is 31112243047. The reversal of 31112243030 is 3034221113.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31112242993 and 31112243011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1929221 + ... + 1945280.

It is an arithmetic number, because the mean of its divisors is an integer number (1935313749).

Almost surely, 2^31112243030 is an apocalyptic number.

31112243030 is a deficient number, since it is larger than the sum of its proper divisors (30817796938).

31112243030 is a wasteful number, since it uses less digits than its factorization.

31112243030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874592.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31112243030 its reverse (3034221113), we get a palindrome (34146464143).

The spelling of 31112243030 in words is "thirty-one billion, one hundred twelve million, two hundred forty-three thousand, thirty".