20121031002 has 32 divisors (see below), whose sum is σ = 40343536512. Its totient is φ = 6690120704.

The previous prime is 20121030983. The next prime is 20121031057. The reversal of 20121031002 is 20013012102.

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, 5561098 + ... + 5564714.

It is an arithmetic number, because the mean of its divisors is an integer number (1260735516).

Almost surely, 2^20121031002 is an apocalyptic number.

20121031002 is an abundant number, since it is smaller than the sum of its proper divisors (20222505510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20121031002 is a wasteful number, since it uses less digits than its factorization.

20121031002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5702.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20121031002 its reverse (20013012102), we get a palindrome (40134043104).

The spelling of 20121031002 in words is "twenty billion, one hundred twenty-one million, thirty-one thousand, two".