345204031 has 4 divisors (see below), whose sum is σ = 345489832. Its totient is φ = 344918232.

The previous prime is 345204029. The next prime is 345204037. The reversal of 345204031 is 130402543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130402543 = 151 ⋅863593.

It is a cyclic number.

It is not a de Polignac number, because 345204031 - 2¹ = 345204029 is a prime.

It is a super-2 number, since 2×345204031² = 238331646037297922, 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 = 345203993 and 345204011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345204037) 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, 141081 + ... + 143506.

It is an arithmetic number, because the mean of its divisors is an integer number (86372458).

Almost surely, 2^345204031 is an apocalyptic number.

345204031 is a deficient number, since it is larger than the sum of its proper divisors (285801).

345204031 is a wasteful number, since it uses less digits than its factorization.

345204031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285800.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 345204031 is about 18579.6671391067. The cubic root of 345204031 is about 701.4961407706.

Adding to 345204031 its reverse (130402543), we get a palindrome (475606574).

The spelling of 345204031 in words is "three hundred forty-five million, two hundred four thousand, thirty-one".