940771631 has 2 divisors, whose sum is σ = 940771632. Its totient is φ = 940771630.

The previous prime is 940771577. The next prime is 940771633. The reversal of 940771631 is 136177049.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-940771631 is a prime.

It is a super-2 number, since 2×940771631² = 1770102523388800322, which contains 22 as substring.

Together with 940771633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (940771633) by changing a digit.

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 as a sum of consecutive naturals, namely, 470385815 + 470385816.

It is an arithmetic number, because the mean of its divisors is an integer number (470385816).

Almost surely, 2^940771631 is an apocalyptic number.

940771631 is a deficient number, since it is larger than the sum of its proper divisors (1).

940771631 is an equidigital number, since it uses as much as digits as its factorization.

940771631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 940771631 is about 30672.0007661711. Note that the first 3 decimals coincide. The cubic root of 940771631 is about 979.8540776068.

The spelling of 940771631 in words is "nine hundred forty million, seven hundred seventy-one thousand, six hundred thirty-one".