245310397 has 4 divisors (see below), whose sum is σ = 247075360. Its totient is φ = 243545436.

The previous prime is 245310353. The next prime is 245310431. The reversal of 245310397 is 793013542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245310397 - 2¹⁵ = 245277629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245310497) 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, 882273 + ... + 882550.

It is an arithmetic number, because the mean of its divisors is an integer number (61768840).

Almost surely, 2^245310397 is an apocalyptic number.

It is an amenable number.

245310397 is a deficient number, since it is larger than the sum of its proper divisors (1764963).

245310397 is a wasteful number, since it uses less digits than its factorization.

245310397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764962.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 245310397 is about 15662.3879724645. The cubic root of 245310397 is about 625.9966154077.

The spelling of 245310397 in words is "two hundred forty-five million, three hundred ten thousand, three hundred ninety-seven".