31340222653 has 12 divisors (see below), whose sum is σ = 33339383380. Its totient is φ = 29454884352.

The previous prime is 31340222647. The next prime is 31340222659. The reversal of 31340222653 is 35622204313.

It is an interprime number because it is at equal distance from previous prime (31340222647) and next prime (31340222659).

It can be written as a sum of positive squares in 6 ways, for example, as 273340089 + 31066882564 = 16533^2 + 176258^2 .

It is not a de Polignac number, because 31340222653 - 2⁵ = 31340222621 is a prime.

It is a super-2 number, since 2×31340222653² (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 (31340222659) 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, 128425 + ... + 281377.

Almost surely, 2^31340222653 is an apocalyptic number.

It is an amenable number.

31340222653 is a deficient number, since it is larger than the sum of its proper divisors (1999160727).

31340222653 is a wasteful number, since it uses less digits than its factorization.

31340222653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153696 (or 153679 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 31340222653 its reverse (35622204313), we get a palindrome (66962426966).

The spelling of 31340222653 in words is "thirty-one billion, three hundred forty million, two hundred twenty-two thousand, six hundred fifty-three".