994001007631 has 2 divisors, whose sum is σ = 994001007632. Its totient is φ = 994001007630.

The previous prime is 994001007547. The next prime is 994001007673. The reversal of 994001007631 is 136700100499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 994001007631 - 2¹¹ = 994001005583 is a prime.

It is a super-2 number, since 2×994001007631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994001007031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497000503815 + 497000503816.

It is an arithmetic number, because the mean of its divisors is an integer number (497000503816).

Almost surely, 2^994001007631 is an apocalyptic number.

994001007631 is a deficient number, since it is larger than the sum of its proper divisors (1).

994001007631 is an equidigital number, since it uses as much as digits as its factorization.

994001007631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The spelling of 994001007631 in words is "nine hundred ninety-four billion, one million, seven thousand, six hundred thirty-one".