147856031 has 4 divisors (see below), whose sum is σ = 151001952. Its totient is φ = 144710112.

The previous prime is 147856013. The next prime is 147856039. The reversal of 147856031 is 130658741.

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 147856031 - 2¹⁴ = 147839647 is a prime.

It is a super-3 number, since 3×147856031³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147855982 and 147856000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147856039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1572890 + ... + 1572983.

It is an arithmetic number, because the mean of its divisors is an integer number (37750488).

Almost surely, 2^147856031 is an apocalyptic number.

147856031 is a deficient number, since it is larger than the sum of its proper divisors (3145921).

147856031 is an equidigital number, since it uses as much as digits as its factorization.

147856031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145920.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 147856031 is about 12159.6065314631. The cubic root of 147856031 is about 528.7856748541.

The spelling of 147856031 in words is "one hundred forty-seven million, eight hundred fifty-six thousand, thirty-one".