1103312400251 has 4 divisors (see below), whose sum is σ = 1114236285504. Its totient is φ = 1092388515000.

The previous prime is 1103312400227. The next prime is 1103312400271. The reversal of 1103312400251 is 1520042133011.

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 1103312400251 - 2³⁴ = 1086132531067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103312400271) 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, 5461942475 + ... + 5461942676.

It is an arithmetic number, because the mean of its divisors is an integer number (278559071376).

Almost surely, 2^{1103312400251} is an apocalyptic number.

1103312400251 is a deficient number, since it is larger than the sum of its proper divisors (10923885253).

1103312400251 is a wasteful number, since it uses less digits than its factorization.

1103312400251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923885252.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 1103312400251 its reverse (1520042133011), we get a palindrome (2623354533262).

The spelling of 1103312400251 in words is "one trillion, one hundred three billion, three hundred twelve million, four hundred thousand, two hundred fifty-one".