247431440634 has 16 divisors (see below), whose sum is σ = 565557578688. Its totient is φ = 70694697312.

The previous prime is 247431440611. The next prime is 247431440681. The reversal of 247431440634 is 436044134742.

It is a happy number.

It is a super-2 number, since 2×247431440634² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 5891224777 = 247431440634 / (2 + 4 + 7 + 4 + 3 + 1 + 4 + 4 + 0 + 6 + 3 + 4).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2945612347 + ... + 2945612430.

It is an arithmetic number, because the mean of its divisors is an integer number (35347348668).

Almost surely, 2^247431440634 is an apocalyptic number.

247431440634 is an abundant number, since it is smaller than the sum of its proper divisors (318126138054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247431440634 is a wasteful number, since it uses less digits than its factorization.

247431440634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891224789.

The product of its (nonzero) digits is 774144, while the sum is 42.

The spelling of 247431440634 in words is "two hundred forty-seven billion, four hundred thirty-one million, four hundred forty thousand, six hundred thirty-four".