726342631 has 16 divisors (see below), whose sum is σ = 851558400. Its totient is φ = 619263960.

The previous prime is 726342623. The next prime is 726342641. The reversal of 726342631 is 136243627.

It is not a de Polignac number, because 726342631 - 2³ = 726342623 is a prime.

It is a super-2 number, since 2×726342631² = 1055147235216004322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726342641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59970 + ... + 71056.

It is an arithmetic number, because the mean of its divisors is an integer number (53222400).

Almost surely, 2^726342631 is an apocalyptic number.

726342631 is a deficient number, since it is larger than the sum of its proper divisors (125215769).

726342631 is a wasteful number, since it uses less digits than its factorization.

726342631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11299 (or 11285 counting only the distinct ones).

The product of its digits is 36288, while the sum is 34.

The square root of 726342631 is about 26950.7445351701. The cubic root of 726342631 is about 898.9051010463.

It can be divided in two parts, 7263 and 42631, that added together give a palindrome (49894).

The spelling of 726342631 in words is "seven hundred twenty-six million, three hundred forty-two thousand, six hundred thirty-one".