152231731 has 16 divisors (see below), whose sum is σ = 161722368. Its totient is φ = 143078400.

The previous prime is 152231693. The next prime is 152231749. The reversal of 152231731 is 137132251.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 152231731 - 2²³ = 143843123 is a prime.

It is a super-2 number, since 2×152231731² = 46348999846512722, 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 = 152231696 and 152231705.

It is not an unprimeable number, because it can be changed into a prime (152231231) 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, 237171 + ... + 237811.

It is an arithmetic number, because the mean of its divisors is an integer number (10107648).

Almost surely, 2^152231731 is an apocalyptic number.

152231731 is a deficient number, since it is larger than the sum of its proper divisors (9490637).

152231731 is a wasteful number, since it uses less digits than its factorization.

152231731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882.

The product of its digits is 1260, while the sum is 25.

The square root of 152231731 is about 12338.2223598053. Note that the first 3 decimals coincide. The cubic root of 152231731 is about 533.9513987853.

Adding to 152231731 its reverse (137132251), we get a palindrome (289363982).

The spelling of 152231731 in words is "one hundred fifty-two million, two hundred thirty-one thousand, seven hundred thirty-one".