651240230 has 16 divisors (see below), whose sum is σ = 1192101840. Its totient is φ = 256080672.

The previous prime is 651240221. The next prime is 651240241. The reversal of 651240230 is 32042156.

It is a super-2 number, since 2×651240230² = 848227674340905800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 651240196 and 651240205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551309 + ... + 552488.

It is an arithmetic number, because the mean of its divisors is an integer number (74506365).

Almost surely, 2^651240230 is an apocalyptic number.

651240230 is a deficient number, since it is larger than the sum of its proper divisors (540861610).

651240230 is a wasteful number, since it uses less digits than its factorization.

651240230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103863.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 651240230 is about 25519.4088881385. The cubic root of 651240230 is about 866.7896967024.

Adding to 651240230 its reverse (32042156), we get a palindrome (683282386).

The spelling of 651240230 in words is "six hundred fifty-one million, two hundred forty thousand, two hundred thirty".