145404031 has 2 divisors, whose sum is σ = 145404032. Its totient is φ = 145404030.

The previous prime is 145404023. The next prime is 145404037. The reversal of 145404031 is 130404541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145404031 - 2³ = 145404023 is a prime.

It is a super-2 number, since 2×145404031² = 42284664462097922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145403993 and 145404011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145404037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72702015 + 72702016.

It is an arithmetic number, because the mean of its divisors is an integer number (72702016).

Almost surely, 2^145404031 is an apocalyptic number.

145404031 is a deficient number, since it is larger than the sum of its proper divisors (1).

145404031 is an equidigital number, since it uses as much as digits as its factorization.

145404031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 145404031 is about 12058.3593826026. The cubic root of 145404031 is about 525.8462915966.

Adding to 145404031 its reverse (130404541), we get a palindrome (275808572).

It can be divided in two parts, 14 and 5404031, that added together give a palindrome (5404045).

The spelling of 145404031 in words is "one hundred forty-five million, four hundred four thousand, thirty-one".