1542333131 has 2 divisors, whose sum is σ = 1542333132. Its totient is φ = 1542333130.

The previous prime is 1542333083. The next prime is 1542333137. The reversal of 1542333131 is 1313332451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542333131 is a prime.

It is a super-2 number, since 2×1542333131² = 4757582973960526322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1542333131.

It is not a weakly prime, because it can be changed into another prime (1542333137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771166565 + 771166566.

It is an arithmetic number, because the mean of its divisors is an integer number (771166566).

Almost surely, 2^1542333131 is an apocalyptic number.

1542333131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542333131 is an equidigital number, since it uses as much as digits as its factorization.

1542333131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 26.

The square root of 1542333131 is about 39272.5493315624. The cubic root of 1542333131 is about 1155.3832379540.

Adding to 1542333131 its reverse (1313332451), we get a palindrome (2855665582).

The spelling of 1542333131 in words is "one billion, five hundred forty-two million, three hundred thirty-three thousand, one hundred thirty-one".