145270031 has 2 divisors, whose sum is σ = 145270032. Its totient is φ = 145270030.

The previous prime is 145270009. The next prime is 145270033. The reversal of 145270031 is 130072541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145270031 - 2¹⁸ = 145007887 is a prime.

It is a super-2 number, since 2×145270031² = 42206763813481922, which contains 22 as substring.

Together with 145270033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 145269979 and 145270006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145270033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72635015 + 72635016.

It is an arithmetic number, because the mean of its divisors is an integer number (72635016).

Almost surely, 2^145270031 is an apocalyptic number.

145270031 is a deficient number, since it is larger than the sum of its proper divisors (1).

145270031 is an equidigital number, since it uses as much as digits as its factorization.

145270031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 145270031 is about 12052.8017904552. The cubic root of 145270031 is about 525.6847072184.

The spelling of 145270031 in words is "one hundred forty-five million, two hundred seventy thousand, thirty-one".