245405031 has 4 divisors (see below), whose sum is σ = 327206712. Its totient is φ = 163603352.

The previous prime is 245405029. The next prime is 245405057. The reversal of 245405031 is 130504542.

245405031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 245405031 - 2¹ = 245405029 is a prime.

It is a super-2 number, since 2×245405031² = 120447258480221922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245404992 and 245405010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245405731) 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, 40900836 + ... + 40900841.

It is an arithmetic number, because the mean of its divisors is an integer number (81801678).

Almost surely, 2^245405031 is an apocalyptic number.

245405031 is a deficient number, since it is larger than the sum of its proper divisors (81801681).

245405031 is an equidigital number, since it uses as much as digits as its factorization.

245405031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81801680.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 245405031 is about 15665.4087402787. The cubic root of 245405031 is about 626.0771024807.

Adding to 245405031 its reverse (130504542), we get a palindrome (375909573).

The spelling of 245405031 in words is "two hundred forty-five million, four hundred five thousand, thirty-one".