340635631 has 4 divisors (see below), whose sum is σ = 389297872. Its totient is φ = 291973392.

The previous prime is 340635623. The next prime is 340635643. The reversal of 340635631 is 136536043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136536043 = 7 ⋅19505149.

It is a cyclic number.

It is not a de Polignac number, because 340635631 - 2³ = 340635623 is a prime.

It is a super-2 number, since 2×340635631² = 232065266213536322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340635593 and 340635602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340635601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24331110 + ... + 24331123.

It is an arithmetic number, because the mean of its divisors is an integer number (97324468).

Almost surely, 2^340635631 is an apocalyptic number.

340635631 is a deficient number, since it is larger than the sum of its proper divisors (48662241).

340635631 is an equidigital number, since it uses as much as digits as its factorization.

340635631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48662240.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 340635631 is about 18456.3168319142. The cubic root of 340635631 is about 698.3878757867.

The spelling of 340635631 in words is "three hundred forty million, six hundred thirty-five thousand, six hundred thirty-one".