345161531 has 16 divisors (see below), whose sum is σ = 406035168. Its totient is φ = 289267200.

The previous prime is 345161527. The next prime is 345161539. The reversal of 345161531 is 135161543.

It is a cyclic number.

It is not a de Polignac number, because 345161531 - 2² = 345161527 is a prime.

It is a super-2 number, since 2×345161531² = 238272964964527922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 345161494 and 345161503.

It is not an unprimeable number, because it can be changed into a prime (345161539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184541 + ... + 186401.

It is an arithmetic number, because the mean of its divisors is an integer number (25377198).

Almost surely, 2^345161531 is an apocalyptic number.

345161531 is a deficient number, since it is larger than the sum of its proper divisors (60873637).

345161531 is a wasteful number, since it uses less digits than its factorization.

345161531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182.

The product of its digits is 5400, while the sum is 29.

The square root of 345161531 is about 18578.5233805058. The cubic root of 345161531 is about 701.4673512173.

The spelling of 345161531 in words is "three hundred forty-five million, one hundred sixty-one thousand, five hundred thirty-one".