345190531 has 4 divisors (see below), whose sum is σ = 394503472. Its totient is φ = 295877592.

The previous prime is 345190523. The next prime is 345190553. The reversal of 345190531 is 135091543.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 345190531 - 2³ = 345190523 is a prime.

It is a super-2 number, since 2×345190531² = 238313005384123922, 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 = 345190493 and 345190502.

It is not an unprimeable number, because it can be changed into a prime (345190561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24656460 + ... + 24656473.

It is an arithmetic number, because the mean of its divisors is an integer number (98625868).

Almost surely, 2^345190531 is an apocalyptic number.

345190531 is a deficient number, since it is larger than the sum of its proper divisors (49312941).

345190531 is an equidigital number, since it uses as much as digits as its factorization.

345190531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49312940.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 345190531 is about 18579.3038351818. The cubic root of 345190531 is about 701.4869961098.

The spelling of 345190531 in words is "three hundred forty-five million, one hundred ninety thousand, five hundred thirty-one".