245247331 has 16 divisors (see below), whose sum is σ = 284497920. Its totient is φ = 207072000.

The previous prime is 245247323. The next prime is 245247337. The reversal of 245247331 is 133742542.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 245247331 - 2³ = 245247323 is a prime.

It is a super-2 number, since 2×245247331² = 120292506725247122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245247293 and 245247302.

It is not an unprimeable number, because it can be changed into a prime (245247337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169710 + ... + 171148.

It is an arithmetic number, because the mean of its divisors is an integer number (17781120).

Almost surely, 2^245247331 is an apocalyptic number.

245247331 is a deficient number, since it is larger than the sum of its proper divisors (39250589).

245247331 is a wasteful number, since it uses less digits than its factorization.

245247331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794.

The product of its digits is 20160, while the sum is 31.

The square root of 245247331 is about 15660.3745485221. The cubic root of 245247331 is about 625.9429657096.

Adding to 245247331 its reverse (133742542), we get a palindrome (378989873).

The spelling of 245247331 in words is "two hundred forty-five million, two hundred forty-seven thousand, three hundred thirty-one".