152031531 has 16 divisors (see below), whose sum is σ = 208010880. Its totient is φ = 98716800.

The previous prime is 152031499. The next prime is 152031569. The reversal of 152031531 is 135130251.

152031531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 152031531 - 2⁵ = 152031499 is a prime.

It is a super-4 number, since 4×152031531⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 152031498 and 152031507.

It is not an unprimeable number, because it can be changed into a prime (152031431) 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, 50260 + ... + 53198.

It is an arithmetic number, because the mean of its divisors is an integer number (13000680).

Almost surely, 2^152031531 is an apocalyptic number.

152031531 is a deficient number, since it is larger than the sum of its proper divisors (55979349).

152031531 is a wasteful number, since it uses less digits than its factorization.

152031531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3386.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 152031531 is about 12330.1066905360. The cubic root of 152031531 is about 533.7172295493.

Adding to 152031531 its reverse (135130251), we get a palindrome (287161782).

The spelling of 152031531 in words is "one hundred fifty-two million, thirty-one thousand, five hundred thirty-one".