345023031 has 4 divisors (see below), whose sum is σ = 460030712. Its totient is φ = 230015352.

The previous prime is 345023017. The next prime is 345023051. The reversal of 345023031 is 130320543.

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

It is not a de Polignac number, because 345023031 - 2⁶ = 345022967 is a prime.

It is a super-2 number, since 2×345023031² = 238081783840853922, 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 = 345022989 and 345023007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345023011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57503836 + ... + 57503841.

It is an arithmetic number, because the mean of its divisors is an integer number (115007678).

Almost surely, 2^345023031 is an apocalyptic number.

345023031 is a deficient number, since it is larger than the sum of its proper divisors (115007681).

345023031 is a wasteful number, since it uses less digits than its factorization.

345023031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115007680.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 345023031 is about 18574.7955843395. The cubic root of 345023031 is about 701.3735147408.

Adding to 345023031 its reverse (130320543), we get a palindrome (475343574).

The spelling of 345023031 in words is "three hundred forty-five million, twenty-three thousand, thirty-one".