145464131 has 4 divisors (see below), whose sum is σ = 149395632. Its totient is φ = 141532632.

The previous prime is 145464113. The next prime is 145464217. The reversal of 145464131 is 131464541.

145464131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131464541 = 13 ⋅10112657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145464131 is a prime.

It is a super-2 number, since 2×145464131² = 42319626815170322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145464094 and 145464103.

It is not an unprimeable number, because it can be changed into a prime (145464101) 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, 1965695 + ... + 1965768.

It is an arithmetic number, because the mean of its divisors is an integer number (37348908).

Almost surely, 2^145464131 is an apocalyptic number.

145464131 is a deficient number, since it is larger than the sum of its proper divisors (3931501).

145464131 is an equidigital number, since it uses as much as digits as its factorization.

145464131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931500.

The product of its digits is 5760, while the sum is 29.

The square root of 145464131 is about 12060.8511722846. The cubic root of 145464131 is about 525.9187311494.

The spelling of 145464131 in words is "one hundred forty-five million, four hundred sixty-four thousand, one hundred thirty-one".