145534331 has 12 divisors (see below), whose sum is σ = 155089032. Its totient is φ = 136539648.

The previous prime is 145534307. The next prime is 145534369. The reversal of 145534331 is 133435541.

It is not a de Polignac number, because 145534331 - 2¹⁸ = 145272187 is a prime.

It is a super-2 number, since 2×145534331² = 42360482999235122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145534294 and 145534303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145534381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124556 + ... + 125718.

It is an arithmetic number, because the mean of its divisors is an integer number (12924086).

Almost surely, 2^145534331 is an apocalyptic number.

145534331 is a deficient number, since it is larger than the sum of its proper divisors (9554701).

145534331 is a wasteful number, since it uses less digits than its factorization.

145534331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630 (or 1613 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 145534331 is about 12063.7610636153. The cubic root of 145534331 is about 526.0033191442.

Adding to 145534331 its reverse (133435541), we get a palindrome (278969872).

The spelling of 145534331 in words is "one hundred forty-five million, five hundred thirty-four thousand, three hundred thirty-one".