31466151449 has 2 divisors, whose sum is σ = 31466151450. Its totient is φ = 31466151448.

The previous prime is 31466151413. The next prime is 31466151467. The reversal of 31466151449 is 94415166413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27262963225 + 4203188224 = 165115^2 + 64832^2 .

It is a cyclic number.

It is not a de Polignac number, because 31466151449 - 2⁸ = 31466151193 is a prime.

It is a super-2 number, since 2×31466151449² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31466151049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15733075724 + 15733075725.

It is an arithmetic number, because the mean of its divisors is an integer number (15733075725).

Almost surely, 2^31466151449 is an apocalyptic number.

It is an amenable number.

31466151449 is a deficient number, since it is larger than the sum of its proper divisors (1).

31466151449 is an equidigital number, since it uses as much as digits as its factorization.

31466151449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 44.

The spelling of 31466151449 in words is "thirty-one billion, four hundred sixty-six million, one hundred fifty-one thousand, four hundred forty-nine".