145465631 has 2 divisors, whose sum is σ = 145465632. Its totient is φ = 145465630.

The previous prime is 145465597. The next prime is 145465633. The reversal of 145465631 is 136564541.

145465631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (136564541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145465631 is a prime.

It is a super-2 number, since 2×145465631² = 42320499604456322, which contains 22 as substring.

Together with 145465633, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 145465591 and 145465600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145465633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72732815 + 72732816.

It is an arithmetic number, because the mean of its divisors is an integer number (72732816).

Almost surely, 2^145465631 is an apocalyptic number.

145465631 is a deficient number, since it is larger than the sum of its proper divisors (1).

145465631 is an equidigital number, since it uses as much as digits as its factorization.

145465631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 145465631 is about 12060.9133567902. The cubic root of 145465631 is about 525.9205388696.

It can be divided in two parts, 14 and 5465631, that added together give a palindrome (5465645).

The spelling of 145465631 in words is "one hundred forty-five million, four hundred sixty-five thousand, six hundred thirty-one".