31341091 has 2 divisors, whose sum is σ = 31341092. Its totient is φ = 31341090.

The previous prime is 31341071. The next prime is 31341113. The reversal of 31341091 is 19014313.

It is an a-pointer prime, because the next prime (31341113) can be obtained adding 31341091 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31341091 - 2¹⁷ = 31210019 is a prime.

It is not a weakly prime, because it can be changed into another prime (31341001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15670545 + 15670546.

It is an arithmetic number, because the mean of its divisors is an integer number (15670546).

Almost surely, 2^31341091 is an apocalyptic number.

31341091 is a deficient number, since it is larger than the sum of its proper divisors (1).

31341091 is an equidigital number, since it uses as much as digits as its factorization.

31341091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 31341091 is about 5598.3114418546. The cubic root of 31341091 is about 315.2860121703.

It can be divided in two parts, 3134 and 1091, that added together give a square (4225 = 65²).

The spelling of 31341091 in words is "thirty-one million, three hundred forty-one thousand, ninety-one".