1392109031 has 4 divisors (see below), whose sum is σ = 1392495432. Its totient is φ = 1391722632.

The previous prime is 1392109013. The next prime is 1392109079. The reversal of 1392109031 is 1309012931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1309012931 = 23599 ⋅55469.

It is a cyclic number.

It is not a de Polignac number, because 1392109031 - 2¹⁸ = 1391846887 is a prime.

It is a super-2 number, since 2×1392109031² = 3875935108383517922, 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 = 1392108985 and 1392109003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392109231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187745 + ... + 195018.

It is an arithmetic number, because the mean of its divisors is an integer number (348123858).

Almost surely, 2^1392109031 is an apocalyptic number.

1392109031 is a deficient number, since it is larger than the sum of its proper divisors (386401).

1392109031 is an equidigital number, since it uses as much as digits as its factorization.

1392109031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386400.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1392109031 is about 37310.9773525165. The cubic root of 1392109031 is about 1116.5831856307.

The spelling of 1392109031 in words is "one billion, three hundred ninety-two million, one hundred nine thousand, thirty-one".