146225031 has 4 divisors (see below), whose sum is σ = 194966712. Its totient is φ = 97483352.

The previous prime is 146225029. The next prime is 146225087. The reversal of 146225031 is 130522641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130522641 = 3 ⋅43507547.

It is a cyclic number.

It is not a de Polignac number, because 146225031 - 2¹ = 146225029 is a prime.

It is a super-2 number, since 2×146225031² = 42763519381901922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 146224992 and 146225010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146225231) 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, 24370836 + ... + 24370841.

It is an arithmetic number, because the mean of its divisors is an integer number (48741678).

Almost surely, 2^146225031 is an apocalyptic number.

146225031 is a deficient number, since it is larger than the sum of its proper divisors (48741681).

146225031 is an equidigital number, since it uses as much as digits as its factorization.

146225031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48741680.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 146225031 is about 12092.3542372856. The cubic root of 146225031 is about 526.8341362864.

Adding to 146225031 its reverse (130522641), we get a palindrome (276747672).

The spelling of 146225031 in words is "one hundred forty-six million, two hundred twenty-five thousand, thirty-one".