145231130 has 64 divisors (see below), whose sum is σ = 300931200. Its totient is φ = 49969920.

The previous prime is 145231111. The next prime is 145231147. The reversal of 145231130 is 31132541.

145231130 = 347² + 348² + ... + 781².

It is a super-2 number, since 2×145231130² = 42184162242153800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168641 + ... + 169499.

It is an arithmetic number, because the mean of its divisors is an integer number (4702050).

Almost surely, 2^145231130 is an apocalyptic number.

145231130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145231130 is an abundant number, since it is smaller than the sum of its proper divisors (155700070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145231130 is a wasteful number, since it uses less digits than its factorization.

145231130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 145231130 is about 12051.1879082520. The cubic root of 145231130 is about 525.6377796994.

Adding to 145231130 its reverse (31132541), we get a palindrome (176363671).

The spelling of 145231130 in words is "one hundred forty-five million, two hundred thirty-one thousand, one hundred thirty".