1240403204131 has 16 divisors (see below), whose sum is σ = 1536896088000. Its totient is φ = 974831211648.

The previous prime is 1240403204123. The next prime is 1240403204141. The reversal of 1240403204131 is 1314023040421.

It is not a de Polignac number, because 1240403204131 - 2³ = 1240403204123 is a prime.

It is a super-2 number, since 2×1240403204131² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1240403204096 and 1240403204105.

It is not an unprimeable number, because it can be changed into a prime (1240403204141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45727396 + ... + 45754513.

It is an arithmetic number, because the mean of its divisors is an integer number (96056005500).

Almost surely, 2^{1240403204131} is an apocalyptic number.

1240403204131 is a deficient number, since it is larger than the sum of its proper divisors (296492883869).

1240403204131 is a wasteful number, since it uses less digits than its factorization.

1240403204131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91482078.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1240403204131 its reverse (1314023040421), we get a palindrome (2554426244552).

The spelling of 1240403204131 in words is "one trillion, two hundred forty billion, four hundred three million, two hundred four thousand, one hundred thirty-one".