145064731 has 8 divisors (see below), whose sum is σ = 165861344. Its totient is φ = 124286400.

The previous prime is 145064719. The next prime is 145064737. The reversal of 145064731 is 137460541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145064731 - 2⁹ = 145064219 is a prime.

It is a super-2 number, since 2×145064731² = 42087552360204722, 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 = 145064693 and 145064702.

It is not an unprimeable number, because it can be changed into a prime (145064737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26941 + ... + 31873.

It is an arithmetic number, because the mean of its divisors is an integer number (20732668).

Almost surely, 2^145064731 is an apocalyptic number.

145064731 is a deficient number, since it is larger than the sum of its proper divisors (20796613).

145064731 is an equidigital number, since it uses as much as digits as its factorization.

145064731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9141.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 145064731 is about 12044.2820873641. The cubic root of 145064731 is about 525.4369526296.

The spelling of 145064731 in words is "one hundred forty-five million, sixty-four thousand, seven hundred thirty-one".