31231010002 has 8 divisors (see below), whose sum is σ = 46862694396. Its totient is φ = 15610111872.

The previous prime is 31231009963. The next prime is 31231010003. The reversal of 31231010002 is 20001013213.

It can be written as a sum of positive squares in 2 ways, for example, as 25766991441 + 5464018561 = 160521^2 + 73919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (31231010003) 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, 2689323 + ... + 2700910.

Almost surely, 2^31231010002 is an apocalyptic number.

31231010002 is a deficient number, since it is larger than the sum of its proper divisors (15631684394).

31231010002 is a wasteful number, since it uses less digits than its factorization.

31231010002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5393132.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31231010002 its reverse (20001013213), we get a palindrome (51232023215).

The spelling of 31231010002 in words is "thirty-one billion, two hundred thirty-one million, ten thousand, two".