145451031 has 16 divisors (see below), whose sum is σ = 224011008. Its totient is φ = 82966400.

The previous prime is 145451021. The next prime is 145451077. The reversal of 145451031 is 130154541.

It is a happy number.

It is not a de Polignac number, because 145451031 - 2¹³ = 145442839 is a prime.

It is a super-2 number, since 2×145451031² = 42312004837925922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145450992 and 145451010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145451021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129075 + ... + 130196.

It is an arithmetic number, because the mean of its divisors is an integer number (14000688).

Almost surely, 2^145451031 is an apocalyptic number.

145451031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145451031 is a deficient number, since it is larger than the sum of its proper divisors (78559977).

145451031 is a wasteful number, since it uses less digits than its factorization.

145451031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259302.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 145451031 is about 12060.3080806421. The cubic root of 145451031 is about 525.9029431972.

It can be divided in two parts, 1454510 and 31, that added together give a palindrome (1454541).

The spelling of 145451031 in words is "one hundred forty-five million, four hundred fifty-one thousand, thirty-one".