1342131231 has 16 divisors (see below), whose sum is σ = 2047486464. Its totient is φ = 766056864.

The previous prime is 1342131227. The next prime is 1342131251. The reversal of 1342131231 is 1321312431.

It is not a de Polignac number, because 1342131231 - 2² = 1342131227 is a prime.

It is a super-2 number, since 2×1342131231² = 3602632482451150722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1342131198 and 1342131207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342131221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17400 + ... + 54653.

It is an arithmetic number, because the mean of its divisors is an integer number (127967904).

Almost surely, 2^1342131231 is an apocalyptic number.

1342131231 is a deficient number, since it is larger than the sum of its proper divisors (705355233).

1342131231 is an equidigital number, since it uses as much as digits as its factorization.

1342131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72950.

The product of its digits is 432, while the sum is 21.

The square root of 1342131231 is about 36635.1092669314. The cubic root of 1342131231 is about 1103.0579460038.

Adding to 1342131231 its reverse (1321312431), we get a palindrome (2663443662).

The spelling of 1342131231 in words is "one billion, three hundred forty-two million, one hundred thirty-one thousand, two hundred thirty-one".