397042302691 has 2 divisors, whose sum is σ = 397042302692. Its totient is φ = 397042302690.

The previous prime is 397042302667. The next prime is 397042302731. The reversal of 397042302691 is 196203240793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397042302691 - 2¹³ = 397042294499 is a prime.

It is not a weakly prime, because it can be changed into another prime (397042302661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198521151345 + 198521151346.

It is an arithmetic number, because the mean of its divisors is an integer number (198521151346).

Almost surely, 2^397042302691 is an apocalyptic number.

397042302691 is a deficient number, since it is larger than the sum of its proper divisors (1).

397042302691 is an equidigital number, since it uses as much as digits as its factorization.

397042302691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 46.

The spelling of 397042302691 in words is "three hundred ninety-seven billion, forty-two million, three hundred two thousand, six hundred ninety-one".