340373731 has 2 divisors, whose sum is σ = 340373732. Its totient is φ = 340373730.

The previous prime is 340373729. The next prime is 340373749. The reversal of 340373731 is 137373043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340373731 - 2¹ = 340373729 is a prime.

It is a super-2 number, since 2×340373731² = 231708553509720722, which contains 22 as substring.

Together with 340373729, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 340373693 and 340373702.

It is not a weakly prime, because it can be changed into another prime (340373531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170186865 + 170186866.

It is an arithmetic number, because the mean of its divisors is an integer number (170186866).

Almost surely, 2^340373731 is an apocalyptic number.

340373731 is a deficient number, since it is larger than the sum of its proper divisors (1).

340373731 is an equidigital number, since it uses as much as digits as its factorization.

340373731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 31.

The square root of 340373731 is about 18449.2203358299. The cubic root of 340373731 is about 698.2088431541.

The spelling of 340373731 in words is "three hundred forty million, three hundred seventy-three thousand, seven hundred thirty-one".