340813631 has 2 divisors, whose sum is σ = 340813632. Its totient is φ = 340813630.

The previous prime is 340813619. The next prime is 340813639. The reversal of 340813631 is 136318043.

It is a strong prime.

It is an emirp because it is prime and its reverse (136318043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340813631 is a prime.

It is a super-2 number, since 2×340813631² = 232307862150808322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 340813594 and 340813603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340813639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170406815 + 170406816.

It is an arithmetic number, because the mean of its divisors is an integer number (170406816).

Almost surely, 2^340813631 is an apocalyptic number.

340813631 is a deficient number, since it is larger than the sum of its proper divisors (1).

340813631 is an equidigital number, since it uses as much as digits as its factorization.

340813631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 340813631 is about 18461.1383993512. The cubic root of 340813631 is about 698.5095027134.

The spelling of 340813631 in words is "three hundred forty million, eight hundred thirteen thousand, six hundred thirty-one".