1131040403031 has 64 divisors (see below), whose sum is σ = 1979917885440. Its totient is φ = 556851335040.

The previous prime is 1131040402993. The next prime is 1131040403107. The reversal of 1131040403031 is 1303040401311.

It is not a de Polignac number, because 1131040403031 - 2⁷ = 1131040402903 is a prime.

It is a super-2 number, since 2×1131040403031² (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 junction number, because it is equal to n+sod(n) for n = 1131040402989 and 1131040403007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131040403431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 397405 + ... + 1555638.

It is an arithmetic number, because the mean of its divisors is an integer number (30936216960).

Almost surely, 2^{1131040403031} is an apocalyptic number.

1131040403031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1131040403031 is a deficient number, since it is larger than the sum of its proper divisors (848877482409).

1131040403031 is a wasteful number, since it uses less digits than its factorization.

1131040403031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953196.

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

Adding to 1131040403031 its reverse (1303040401311), we get a palindrome (2434080804342).

The spelling of 1131040403031 in words is "one trillion, one hundred thirty-one billion, forty million, four hundred three thousand, thirty-one".