940721231 has 8 divisors (see below), whose sum is σ = 996325920. Its totient is φ = 885146368.

The previous prime is 940721219. The next prime is 940721233. The reversal of 940721231 is 132127049.

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 940721231 - 2⁶ = 940721167 is a prime.

It is a super-2 number, since 2×940721231² = 1769912868908310722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 940721194 and 940721203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (940721233) 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, 116435 + ... + 124251.

It is an arithmetic number, because the mean of its divisors is an integer number (124540740).

Almost surely, 2^940721231 is an apocalyptic number.

940721231 is a deficient number, since it is larger than the sum of its proper divisors (55604689).

940721231 is a wasteful number, since it uses less digits than its factorization.

940721231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14913.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 940721231 is about 30671.1791589433. The cubic root of 940721231 is about 979.8365793724.

The spelling of 940721231 in words is "nine hundred forty million, seven hundred twenty-one thousand, two hundred thirty-one".