103440013131 has 32 divisors (see below), whose sum is σ = 172281292288. Its totient is φ = 53747400960.

The previous prime is 103440013111. The next prime is 103440013141. The reversal of 103440013131 is 131310044301.

It is not a de Polignac number, because 103440013131 - 2¹⁰ = 103440012107 is a prime.

It is a super-2 number, since 2×103440013131² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 103440013098 and 103440013107.

It is not an unprimeable number, because it can be changed into a prime (103440013111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2809330 + ... + 2845911.

It is an arithmetic number, because the mean of its divisors is an integer number (5383790384).

Almost surely, 2^103440013131 is an apocalyptic number.

103440013131 is a deficient number, since it is larger than the sum of its proper divisors (68841279157).

103440013131 is a wasteful number, since it uses less digits than its factorization.

103440013131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5655331.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 103440013131 its reverse (131310044301), we get a palindrome (234750057432).

The spelling of 103440013131 in words is "one hundred three billion, four hundred forty million, thirteen thousand, one hundred thirty-one".