31440231423013 has 8 divisors (see below), whose sum is σ = 36040248021440. Its totient is φ = 26867353566240.

The previous prime is 31440231423011. The next prime is 31440231423017. The reversal of 31440231423013 is 31032413204413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31440231423013 - 2¹ = 31440231423011 is a prime.

It is a super-2 number, since 2×31440231423013² (a number of 28 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 (31440231423011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6784682928 + ... + 6784687561.

It is an arithmetic number, because the mean of its divisors is an integer number (4505031002680).

Almost surely, 2^{31440231423013} is an apocalyptic number.

It is an amenable number.

31440231423013 is a deficient number, since it is larger than the sum of its proper divisors (4600016598427).

31440231423013 is a wasteful number, since it uses less digits than its factorization.

31440231423013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13569370827.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 31440231423013 its reverse (31032413204413), we get a palindrome (62472644627426).

The spelling of 31440231423013 in words is "thirty-one trillion, four hundred forty billion, two hundred thirty-one million, four hundred twenty-three thousand, thirteen".