72313011 has 12 divisors (see below), whose sum is σ = 104747760. Its totient is φ = 48072240.

The previous prime is 72313001. The next prime is 72313013. The reversal of 72313011 is 11031327.

It is not a de Polignac number, because 72313011 - 2¹¹ = 72310963 is a prime.

It is a super-2 number, since 2×72313011² = 10458343119772242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72313013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7960 + ... + 14421.

It is an arithmetic number, because the mean of its divisors is an integer number (8728980).

Almost surely, 2^72313011 is an apocalyptic number.

72313011 is a deficient number, since it is larger than the sum of its proper divisors (32434749).

72313011 is a wasteful number, since it uses less digits than its factorization.

72313011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22746 (or 22743 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 72313011 is about 8503.7057216251. The cubic root of 72313011 is about 416.6187533884.

Adding to 72313011 its reverse (11031327), we get a palindrome (83344338).

It can be divided in two parts, 723 and 13011, that multiplied together give a triangular number (9406953 = T₄₃₃₇).

The spelling of 72313011 in words is "seventy-two million, three hundred thirteen thousand, eleven".