151861123 has 2 divisors, whose sum is σ = 151861124. Its totient is φ = 151861122.

The previous prime is 151861117. The next prime is 151861159. The reversal of 151861123 is 321168151.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151861123 is a prime.

It is a super-2 number, since 2×151861123² = 46123601357642258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 151861091 and 151861100.

It is not a weakly prime, because it can be changed into another prime (151861223) 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 as a sum of consecutive naturals, namely, 75930561 + 75930562.

It is an arithmetic number, because the mean of its divisors is an integer number (75930562).

Almost surely, 2^151861123 is an apocalyptic number.

151861123 is a deficient number, since it is larger than the sum of its proper divisors (1).

151861123 is an equidigital number, since it uses as much as digits as its factorization.

151861123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 28.

The square root of 151861123 is about 12323.1945127877. The cubic root of 151861123 is about 533.5177452993.

The spelling of 151861123 in words is "one hundred fifty-one million, eight hundred sixty-one thousand, one hundred twenty-three".