1531345137 has 8 divisors (see below), whose sum is σ = 2333478336. Its totient is φ = 875054352.

The previous prime is 1531345073. The next prime is 1531345157. The reversal of 1531345137 is 7315431351.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1531345137 - 2⁶ = 1531345073 is a prime.

It is a super-2 number, since 2×1531345137² = 4690035857227097538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1531345098 and 1531345107.

It is not an unprimeable number, because it can be changed into a prime (1531345157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36460578 + ... + 36460619.

It is an arithmetic number, because the mean of its divisors is an integer number (291684792).

Almost surely, 2^1531345137 is an apocalyptic number.

It is an amenable number.

1531345137 is a deficient number, since it is larger than the sum of its proper divisors (802133199).

1531345137 is an equidigital number, since it uses as much as digits as its factorization.

1531345137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72921207.

The product of its digits is 18900, while the sum is 33.

The square root of 1531345137 is about 39132.4052033606. The cubic root of 1531345137 is about 1152.6329431639.

Adding to 1531345137 its reverse (7315431351), we get a palindrome (8846776488).

The spelling of 1531345137 in words is "one billion, five hundred thirty-one million, three hundred forty-five thousand, one hundred thirty-seven".