9012020731 has 8 divisors (see below), whose sum is σ = 10493781984. Its totient is φ = 7578841920.

The previous prime is 9012020683. The next prime is 9012020749. The reversal of 9012020731 is 1370202109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9012020731 - 2¹¹ = 9012018683 is a prime.

It is a super-2 number, since 2×9012020731² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9012020696 and 9012020705.

It is not an unprimeable number, because it can be changed into a prime (9012020531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12145210 + ... + 12145951.

It is an arithmetic number, because the mean of its divisors is an integer number (1311722748).

Almost surely, 2^9012020731 is an apocalyptic number.

9012020731 is a deficient number, since it is larger than the sum of its proper divisors (1481761253).

9012020731 is a wasteful number, since it uses less digits than its factorization.

9012020731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24291221.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 9012020731 is about 94931.6634795788. The cubic root of 9012020731 is about 2081.0094898742.

The spelling of 9012020731 in words is "nine billion, twelve million, twenty thousand, seven hundred thirty-one".