152220031 has 4 divisors (see below), whose sum is σ = 152262864. Its totient is φ = 152177200.

The previous prime is 152220011. The next prime is 152220037. The reversal of 152220031 is 130022251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 152220031 - 2¹⁵ = 152187263 is a prime.

It is a super-2 number, since 2×152220031² = 46341875675281922, 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 = 152219987 and 152220014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152220037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15550 + ... + 23371.

It is an arithmetic number, because the mean of its divisors is an integer number (38065716).

Almost surely, 2^152220031 is an apocalyptic number.

152220031 is a deficient number, since it is larger than the sum of its proper divisors (42833).

152220031 is an equidigital number, since it uses as much as digits as its factorization.

152220031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42832.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 152220031 is about 12337.7482143218. The cubic root of 152220031 is about 533.9377192207.

Adding to 152220031 its reverse (130022251), we get a palindrome (282242282).

The spelling of 152220031 in words is "one hundred fifty-two million, two hundred twenty thousand, thirty-one".