1131210011431 has 2 divisors, whose sum is σ = 1131210011432. Its totient is φ = 1131210011430.

The previous prime is 1131210011411. The next prime is 1131210011473. The reversal of 1131210011431 is 1341100121311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131210011431 - 2³⁹ = 581454197543 is a prime.

It is a super-2 number, since 2×1131210011431² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1131210011399 and 1131210011408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131210011411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565605005715 + 565605005716.

It is an arithmetic number, because the mean of its divisors is an integer number (565605005716).

Almost surely, 2^{1131210011431} is an apocalyptic number.

1131210011431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131210011431 is an equidigital number, since it uses as much as digits as its factorization.

1131210011431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1131210011431 its reverse (1341100121311), we get a palindrome (2472310132742).

The spelling of 1131210011431 in words is "one trillion, one hundred thirty-one billion, two hundred ten million, eleven thousand, four hundred thirty-one".