31552051231 has 2 divisors, whose sum is σ = 31552051232. Its totient is φ = 31552051230.

The previous prime is 31552051183. The next prime is 31552051241. The reversal of 31552051231 is 13215025513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31552051231 - 2⁷ = 31552051103 is a prime.

It is a super-2 number, since 2×31552051231² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31552051231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31552051241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15776025615 + 15776025616.

It is an arithmetic number, because the mean of its divisors is an integer number (15776025616).

Almost surely, 2^31552051231 is an apocalyptic number.

31552051231 is a deficient number, since it is larger than the sum of its proper divisors (1).

31552051231 is an equidigital number, since it uses as much as digits as its factorization.

31552051231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 31552051231 its reverse (13215025513), we get a palindrome (44767076744).

The spelling of 31552051231 in words is "thirty-one billion, five hundred fifty-two million, fifty-one thousand, two hundred thirty-one".