1396938231 has 56 divisors (see below), whose sum is σ = 2269102976. Its totient is φ = 854504640.

The previous prime is 1396938217. The next prime is 1396938233. The reversal of 1396938231 is 1328396931.

It is not a de Polignac number, because 1396938231 - 2¹⁴ = 1396921847 is a prime.

It is a super-2 number, since 2×1396938231² = 3902872842458818722, which 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 (1396938233) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 2113041 + ... + 2113701.

It is an arithmetic number, because the mean of its divisors is an integer number (40519696).

Almost surely, 2^1396938231 is an apocalyptic number.

1396938231 is a deficient number, since it is larger than the sum of its proper divisors (872164745).

1396938231 is an equidigital number, since it uses as much as digits as its factorization.

1396938231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915 (or 900 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 1396938231 is about 37375.6368641392. The cubic root of 1396938231 is about 1117.8728308711.

The spelling of 1396938231 in words is "one billion, three hundred ninety-six million, nine hundred thirty-eight thousand, two hundred thirty-one".