340155531 has 12 divisors (see below), whose sum is σ = 509533752. Its totient is φ = 226770192.

The previous prime is 340155493. The next prime is 340155551. The reversal of 340155531 is 135551043.

It is not a de Polignac number, because 340155531 - 2⁹ = 340155019 is a prime.

It is a super-2 number, since 2×340155531² = 231411570539783922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 340155495 and 340155504.

It is not an unprimeable number, because it can be changed into a prime (340155551) 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 in 11 ways as a sum of consecutive naturals, for example, 699666 + ... + 700151.

It is an arithmetic number, because the mean of its divisors is an integer number (42461146).

Almost surely, 2^340155531 is an apocalyptic number.

340155531 is a deficient number, since it is larger than the sum of its proper divisors (169378221).

340155531 is an equidigital number, since it uses as much as digits as its factorization.

340155531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399832 (or 1399820 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 340155531 is about 18443.3058587662. The cubic root of 340155531 is about 698.0596133298.

The spelling of 340155531 in words is "three hundred forty million, one hundred fifty-five thousand, five hundred thirty-one".