31400240643113 has 4 divisors (see below), whose sum is σ = 32130478797648. Its totient is φ = 30670002488580.

The previous prime is 31400240643089. The next prime is 31400240643137. The reversal of 31400240643113 is 31134604200413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (31400240643089) and next prime (31400240643137).

It is a cyclic number.

It is not a de Polignac number, because 31400240643113 - 2¹² = 31400240639017 is a prime.

It is a super-2 number, since 2×31400240643113² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31400240643113.

It is not an unprimeable number, because it can be changed into a prime (31400240643913) 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, 365119077203 + ... + 365119077288.

It is an arithmetic number, because the mean of its divisors is an integer number (8032619699412).

Almost surely, 2^{31400240643113} is an apocalyptic number.

It is an amenable number.

31400240643113 is a deficient number, since it is larger than the sum of its proper divisors (730238154535).

31400240643113 is an equidigital number, since it uses as much as digits as its factorization.

31400240643113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730238154534.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 31400240643113 its reverse (31134604200413), we get a palindrome (62534844843526).

The spelling of 31400240643113 in words is "thirty-one trillion, four hundred billion, two hundred forty million, six hundred forty-three thousand, one hundred thirteen".