31231000030 has 16 divisors (see below), whose sum is σ = 56253631680. Its totient is φ = 12483992992.

The previous prime is 31230999977. The next prime is 31231000037. The reversal of 31231000030 is 3000013213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31231000037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1035265 + ... + 1065004.

It is an arithmetic number, because the mean of its divisors is an integer number (3515851980).

Almost surely, 2^31231000030 is an apocalyptic number.

31231000030 is a deficient number, since it is larger than the sum of its proper divisors (25022631650).

31231000030 is a wasteful number, since it uses less digits than its factorization.

31231000030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101763.

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 31231000030 its reverse (3000013213), we get a palindrome (34231013243).

The spelling of 31231000030 in words is "thirty-one billion, two hundred thirty-one million, thirty", and thus it is an aban number.