145135731 has 16 divisors (see below), whose sum is σ = 210250656. Its totient is φ = 88521216.

The previous prime is 145135729. The next prime is 145135733. The reversal of 145135731 is 137531541.

It is an interprime number because it is at equal distance from previous prime (145135729) and next prime (145135733).

It is not a de Polignac number, because 145135731 - 2¹ = 145135729 is a prime.

It is a super-2 number, since 2×145135731² = 42128760825808722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145135733) 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 15 ways as a sum of consecutive naturals, for example, 12060 + ... + 20873.

It is an arithmetic number, because the mean of its divisors is an integer number (13140666).

Almost surely, 2^145135731 is an apocalyptic number.

145135731 is a deficient number, since it is larger than the sum of its proper divisors (65114925).

145135731 is a wasteful number, since it uses less digits than its factorization.

145135731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33062.

The product of its digits is 6300, while the sum is 30.

The square root of 145135731 is about 12047.2291835094. The cubic root of 145135731 is about 525.5226613536.

The spelling of 145135731 in words is "one hundred forty-five million, one hundred thirty-five thousand, seven hundred thirty-one".