31461049 has 2 divisors, whose sum is σ = 31461050. Its totient is φ = 31461048.

The previous prime is 31461047. The next prime is 31461113. The reversal of 31461049 is 94016413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25050025 + 6411024 = 5005^2 + 2532^2 .

It is an emirp because it is prime and its reverse (94016413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31461049 - 2¹ = 31461047 is a prime.

Together with 31461047, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31461047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15730524 + 15730525.

It is an arithmetic number, because the mean of its divisors is an integer number (15730525).

Almost surely, 2^31461049 is an apocalyptic number.

It is an amenable number.

31461049 is a deficient number, since it is larger than the sum of its proper divisors (1).

31461049 is an equidigital number, since it uses as much as digits as its factorization.

31461049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 31461049 is about 5609.0149759115. The cubic root of 31461049 is about 315.6877523694.

The spelling of 31461049 in words is "thirty-one million, four hundred sixty-one thousand, forty-nine".