2345209131 has 4 divisors (see below), whose sum is σ = 3126945512. Its totient is φ = 1563472752.

The previous prime is 2345209127. The next prime is 2345209151. The reversal of 2345209131 is 1319025432.

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

It is not a de Polignac number, because 2345209131 - 2² = 2345209127 is a prime.

It is a super-2 number, since 2×2345209131² = 11000011736251550322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2345209151) 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, 390868186 + ... + 390868191.

It is an arithmetic number, because the mean of its divisors is an integer number (781736378).

Almost surely, 2^2345209131 is an apocalyptic number.

2345209131 is a deficient number, since it is larger than the sum of its proper divisors (781736381).

2345209131 is an equidigital number, since it uses as much as digits as its factorization.

2345209131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781736380.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 2345209131 is about 48427.3593230108. The cubic root of 2345209131 is about 1328.5988090603.

The spelling of 2345209131 in words is "two billion, three hundred forty-five million, two hundred nine thousand, one hundred thirty-one".