1431213 has 32 divisors (see below), whose sum is σ = 2442240. Its totient is φ = 725760.

The previous prime is 1431211. The next prime is 1431217. The reversal of 1431213 is 3121341.

It is not a de Polignac number, because 1431213 - 2¹ = 1431211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1431192 and 1431201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431211) 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 in 31 ways as a sum of consecutive naturals, for example, 6678 + ... + 6888.

It is an arithmetic number, because the mean of its divisors is an integer number (76320).

2^1431213 is an apocalyptic number.

It is an amenable number.

1431213 is a deficient number, since it is larger than the sum of its proper divisors (1011027).

1431213 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (1431212) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (257).

1431213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257.

The product of its digits is 72, while the sum is 15.

The square root of 1431213 is about 1196.3331475806. Note that the first 3 decimals coincide. The cubic root of 1431213 is about 112.6941634664.

Adding to 1431213 its reverse (3121341), we get a palindrome (4552554).

The spelling of 1431213 in words is "one million, four hundred thirty-one thousand, two hundred thirteen".