31020201030 has 128 divisors (see below), whose sum is σ = 92024045568. Its totient is φ = 6516698112.

The previous prime is 31020201013. The next prime is 31020201041. The reversal of 31020201030 is 3010202013.

It is a happy number.

It is a super-2 number, since 2×31020201030² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31020200997 and 31020201015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 611707 + ... + 660473.

It is an arithmetic number, because the mean of its divisors is an integer number (718937856).

Almost surely, 2^31020201030 is an apocalyptic number.

31020201030 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31020201030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46012022784).

31020201030 is an abundant number, since it is smaller than the sum of its proper divisors (61003844538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31020201030 is a wasteful number, since it uses less digits than its factorization.

31020201030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49030.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 31020201030 its reverse (3010202013), we get a palindrome (34030403043).

The spelling of 31020201030 in words is "thirty-one billion, twenty million, two hundred one thousand, thirty".