31342401340 has 48 divisors (see below), whose sum is σ = 68127091200. Its totient is φ = 12097820672.

The previous prime is 31342401313. The next prime is 31342401347. The reversal of 31342401340 is 4310424313.

It is a super-2 number, since 2×31342401340² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31342401347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1081317 + ... + 1109923.

It is an arithmetic number, because the mean of its divisors is an integer number (1419314400).

Almost surely, 2^31342401340 is an apocalyptic number.

It is an amenable number.

31342401340 is an abundant number, since it is smaller than the sum of its proper divisors (36784689860).

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

31342401340 is a wasteful number, since it uses less digits than its factorization.

31342401340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30534 (or 30532 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31342401340 its reverse (4310424313), we get a palindrome (35652825653).

The spelling of 31342401340 in words is "thirty-one billion, three hundred forty-two million, four hundred one thousand, three hundred forty".