31112001002 has 16 divisors (see below), whose sum is σ = 49420099080. Its totient is φ = 14638891008.

The previous prime is 31112000999. The next prime is 31112001049. The reversal of 31112001002 is 20010021113.

It can be written as a sum of positive squares in 4 ways, for example, as 14602063921 + 16509937081 = 120839^2 + 128491^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197738 + ... + 318314.

Almost surely, 2^31112001002 is an apocalyptic number.

31112001002 is a deficient number, since it is larger than the sum of its proper divisors (18308098078).

31112001002 is a wasteful number, since it uses less digits than its factorization.

31112001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128185.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 31112001002 its reverse (20010021113), we get a palindrome (51122022115).

The spelling of 31112001002 in words is "thirty-one billion, one hundred twelve million, one thousand, two".