11531033497 has 2 divisors, whose sum is σ = 11531033498. Its totient is φ = 11531033496.

The previous prime is 11531033441. The next prime is 11531033539. The reversal of 11531033497 is 79433013511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10341059481 + 1189974016 = 101691^2 + 34496^2 .

It is a cyclic number.

It is not a de Polignac number, because 11531033497 - 2³¹ = 9383549849 is a prime.

It is not a weakly prime, because it can be changed into another prime (11531033197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5765516748 + 5765516749.

It is an arithmetic number, because the mean of its divisors is an integer number (5765516749).

Almost surely, 2^11531033497 is an apocalyptic number.

It is an amenable number.

11531033497 is a deficient number, since it is larger than the sum of its proper divisors (1).

11531033497 is an equidigital number, since it uses as much as digits as its factorization.

11531033497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 37.

The spelling of 11531033497 in words is "eleven billion, five hundred thirty-one million, thirty-three thousand, four hundred ninety-seven".