1103406620031 has 20 divisors (see below), whose sum is σ = 1705136670600. Its totient is φ = 710238742416.

The previous prime is 1103406620009. The next prime is 1103406620051. The reversal of 1103406620031 is 1300266043011.

1103406620031 is a `hidden beast` number, since 1 + 1 + 0 + 3 + 4 + 0 + 6 + 620 + 0 + 31 = 666.

It is not a de Polignac number, because 1103406620031 - 2⁹ = 1103406619519 is a prime.

It is a super-2 number, since 2×1103406620031² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1103406619977 and 1103406620004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103406620051) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 234864961 + ... + 234869658.

It is an arithmetic number, because the mean of its divisors is an integer number (85256833530).

Almost surely, 2^{1103406620031} is an apocalyptic number.

1103406620031 is a deficient number, since it is larger than the sum of its proper divisors (601730050569).

1103406620031 is an equidigital number, since it uses as much as digits as its factorization.

1103406620031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469734660 (or 469734651 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 1103406620031 in words is "one trillion, one hundred three billion, four hundred six million, six hundred twenty thousand, thirty-one".