340155631 has 2 divisors, whose sum is σ = 340155632. Its totient is φ = 340155630.

The previous prime is 340155619. The next prime is 340155667. The reversal of 340155631 is 136551043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340155631 - 2¹⁹ = 339631343 is a prime.

It is a super-2 number, since 2×340155631² = 231411706602016322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340155631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340153631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170077815 + 170077816.

It is an arithmetic number, because the mean of its divisors is an integer number (170077816).

Almost surely, 2^340155631 is an apocalyptic number.

340155631 is a deficient number, since it is larger than the sum of its proper divisors (1).

340155631 is an equidigital number, since it uses as much as digits as its factorization.

340155631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 340155631 is about 18443.3085697767. The cubic root of 340155631 is about 698.0596817357.

The spelling of 340155631 in words is "three hundred forty million, one hundred fifty-five thousand, six hundred thirty-one".