31550595949 has 2 divisors, whose sum is σ = 31550595950. Its totient is φ = 31550595948.

The previous prime is 31550595941. The next prime is 31550596037. The reversal of 31550595949 is 94959505513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31508735049 + 41860900 = 177507^2 + 6470^2 .

It is a cyclic number.

It is not a de Polignac number, because 31550595949 - 2³ = 31550595941 is a prime.

It is a super-3 number, since 3×31550595949³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31550595949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31550595941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15775297974 + 15775297975.

It is an arithmetic number, because the mean of its divisors is an integer number (15775297975).

Almost surely, 2^31550595949 is an apocalyptic number.

It is an amenable number.

31550595949 is a deficient number, since it is larger than the sum of its proper divisors (1).

31550595949 is an equidigital number, since it uses as much as digits as its factorization.

31550595949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5467500, while the sum is 55.

The spelling of 31550595949 in words is "thirty-one billion, five hundred fifty million, five hundred ninety-five thousand, nine hundred forty-nine".