145726631 has 2 divisors, whose sum is σ = 145726632. Its totient is φ = 145726630.

The previous prime is 145726571. The next prime is 145726657. The reversal of 145726631 is 136627541.

It is a strong prime.

It is an emirp because it is prime and its reverse (136627541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145726631 is a prime.

It is a super-2 number, since 2×145726631² = 42472501965220322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 145726591 and 145726600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145726681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72863315 + 72863316.

It is an arithmetic number, because the mean of its divisors is an integer number (72863316).

Almost surely, 2^145726631 is an apocalyptic number.

145726631 is a deficient number, since it is larger than the sum of its proper divisors (1).

145726631 is an equidigital number, since it uses as much as digits as its factorization.

145726631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 145726631 is about 12071.7285837613. The cubic root of 145726631 is about 526.2348931858.

The spelling of 145726631 in words is "one hundred forty-five million, seven hundred twenty-six thousand, six hundred thirty-one".