31323013101 has 12 divisors (see below), whose sum is σ = 45494323420. Its totient is φ = 20766637440.

The previous prime is 31323013081. The next prime is 31323013121. The reversal of 31323013101 is 10131032313.

It is a happy number.

31323013101 is a `hidden beast` number, since 31 + 323 + 0 + 1 + 310 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (31323013081) and next prime (31323013121).

It can be written as a sum of positive squares in 2 ways, for example, as 17220263076 + 14102750025 = 131226^2 + 118755^2 .

It is not a de Polignac number, because 31323013101 - 2¹⁴ = 31322996717 is a prime.

It is a super-2 number, since 2×31323013101² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323013121) 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, 9612556 + ... + 9615813.

Almost surely, 2^31323013101 is an apocalyptic number.

It is an amenable number.

31323013101 is a deficient number, since it is larger than the sum of its proper divisors (14171310319).

31323013101 is a wasteful number, since it uses less digits than its factorization.

31323013101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19228556 (or 19228553 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31323013101 its reverse (10131032313), we get a palindrome (41454045414).

The spelling of 31323013101 in words is "thirty-one billion, three hundred twenty-three million, thirteen thousand, one hundred one".