31030012441 has 4 divisors (see below), whose sum is σ = 32100012900. Its totient is φ = 29960011984.

The previous prime is 31030012397. The next prime is 31030012511. The reversal of 31030012441 is 14421003013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14421003013 = 23 ⋅627000131.

It can be written as a sum of positive squares in 2 ways, for example, as 16874010000 + 14156002441 = 129900^2 + 118979^2 .

It is a cyclic number.

It is not a de Polignac number, because 31030012441 - 2³¹ = 28882528793 is a prime.

It is a super-2 number, since 2×31030012441² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31030052441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535000186 + ... + 535000243.

It is an arithmetic number, because the mean of its divisors is an integer number (8025003225).

Almost surely, 2^31030012441 is an apocalyptic number.

It is an amenable number.

31030012441 is a deficient number, since it is larger than the sum of its proper divisors (1070000459).

31030012441 is a wasteful number, since it uses less digits than its factorization.

31030012441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070000458.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31030012441 its reverse (14421003013), we get a palindrome (45451015454).

The spelling of 31030012441 in words is "thirty-one billion, thirty million, twelve thousand, four hundred forty-one".