11312012002 has 4 divisors (see below), whose sum is σ = 16968018006. Its totient is φ = 5656006000.

The previous prime is 11312011999. The next prime is 11312012039. The reversal of 11312012002 is 20021021311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20021021311 = 59957 ⋅333923.

It can be written as a sum of positive squares in only one way, i.e., 7556651041 + 3755360961 = 86929^2 + 61281^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828002999 + ... + 2828003002.

Almost surely, 2^11312012002 is an apocalyptic number.

11312012002 is a deficient number, since it is larger than the sum of its proper divisors (5656006004).

11312012002 is an equidigital number, since it uses as much as digits as its factorization.

11312012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5656006003.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11312012002 its reverse (20021021311), we get a palindrome (31333033313).

The spelling of 11312012002 in words is "eleven billion, three hundred twelve million, twelve thousand, two".