1103403402391 has 2 divisors, whose sum is σ = 1103403402392. Its totient is φ = 1103403402390.

The previous prime is 1103403402383. The next prime is 1103403402407. The reversal of 1103403402391 is 1932043043011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1103403402391 - 2³ = 1103403402383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1103403402331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551701701195 + 551701701196.

It is an arithmetic number, because the mean of its divisors is an integer number (551701701196).

Almost surely, 2^{1103403402391} is an apocalyptic number.

1103403402391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103403402391 is an equidigital number, since it uses as much as digits as its factorization.

1103403402391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 1103403402391 in words is "one trillion, one hundred three billion, four hundred three million, four hundred two thousand, three hundred ninety-one".