11311202831 has 2 divisors, whose sum is σ = 11311202832. Its totient is φ = 11311202830.

The previous prime is 11311202741. The next prime is 11311202849. The reversal of 11311202831 is 13820211311.

It is a strong prime.

It is an emirp because it is prime and its reverse (13820211311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11311202831 - 2¹⁰ = 11311201807 is a prime.

It is a super-2 number, since 2×11311202831² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11311202797 and 11311202806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11311201831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655601415 + 5655601416.

It is an arithmetic number, because the mean of its divisors is an integer number (5655601416).

Almost surely, 2^11311202831 is an apocalyptic number.

11311202831 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311202831 is an equidigital number, since it uses as much as digits as its factorization.

11311202831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 11311202831 in words is "eleven billion, three hundred eleven million, two hundred two thousand, eight hundred thirty-one".