103212313511 has 4 divisors (see below), whose sum is σ = 103266954000. Its totient is φ = 103157673024.

The previous prime is 103212313507. The next prime is 103212313517. The reversal of 103212313511 is 115313212301.

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 103212313511 - 2² = 103212313507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103212313517) 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, 27317411 + ... + 27321188.

It is an arithmetic number, because the mean of its divisors is an integer number (25816738500).

Almost surely, 2^103212313511 is an apocalyptic number.

103212313511 is a deficient number, since it is larger than the sum of its proper divisors (54640489).

103212313511 is an equidigital number, since it uses as much as digits as its factorization.

103212313511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54640488.

The product of its (nonzero) digits is 540, while the sum is 23.

Adding to 103212313511 its reverse (115313212301), we get a palindrome (218525525812).

The spelling of 103212313511 in words is "one hundred three billion, two hundred twelve million, three hundred thirteen thousand, five hundred eleven".