15312001011 has 4 divisors (see below), whose sum is σ = 20416001352. Its totient is φ = 10208000672.

The previous prime is 15312001007. The next prime is 15312001039. The reversal of 15312001011 is 11010021351.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15312001011 - 2² = 15312001007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15312001051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2552000166 + ... + 2552000171.

It is an arithmetic number, because the mean of its divisors is an integer number (5104000338).

Almost surely, 2^15312001011 is an apocalyptic number.

15312001011 is a deficient number, since it is larger than the sum of its proper divisors (5104000341).

15312001011 is an equidigital number, since it uses as much as digits as its factorization.

15312001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104000340.

The product of its (nonzero) digits is 30, while the sum is 15.

Adding to 15312001011 its reverse (11010021351), we get a palindrome (26322022362).

The spelling of 15312001011 in words is "fifteen billion, three hundred twelve million, one thousand, eleven".