1311011040423 has 16 divisors (see below), whose sum is σ = 2004549313536. Its totient is φ = 746592339360.

The previous prime is 1311011040407. The next prime is 1311011040439. The reversal of 1311011040423 is 3240401101131.

It is an interprime number because it is at equal distance from previous prime (1311011040407) and next prime (1311011040439).

It is not a de Polignac number, because 1311011040423 - 2⁴ = 1311011040407 is a prime.

It is a super-2 number, since 2×1311011040423² (a number of 25 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1311011040423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311011040403) 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, 106528143 + ... + 106540448.

It is an arithmetic number, because the mean of its divisors is an integer number (125284332096).

Almost surely, 2^{1311011040423} is an apocalyptic number.

1311011040423 is a deficient number, since it is larger than the sum of its proper divisors (693538273113).

1311011040423 is a wasteful number, since it uses less digits than its factorization.

1311011040423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213068894.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1311011040423 its reverse (3240401101131), we get a palindrome (4551412141554).

The spelling of 1311011040423 in words is "one trillion, three hundred eleven billion, eleven million, forty thousand, four hundred twenty-three".