7312630781 has 8 divisors (see below), whose sum is σ = 7434995424. Its totient is φ = 7190655120.

The previous prime is 7312630771. The next prime is 7312630789. The reversal of 7312630781 is 1870362137.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7312630781 - 2¹⁰ = 7312629757 is a prime.

It is a super-2 number, since 2×7312630781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7312630789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59210 + ... + 134651.

It is an arithmetic number, because the mean of its divisors is an integer number (929374428).

Almost surely, 2^7312630781 is an apocalyptic number.

It is an amenable number.

7312630781 is a deficient number, since it is larger than the sum of its proper divisors (122364643).

7312630781 is a wasteful number, since it uses less digits than its factorization.

7312630781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194491.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 7312630781 is about 85513.9215625152. The cubic root of 7312630781 is about 1940.9955903239.

The spelling of 7312630781 in words is "seven billion, three hundred twelve million, six hundred thirty thousand, seven hundred eighty-one".