31440231423100 has 36 divisors (see below), whose sum is σ = 68226189128104. Its totient is φ = 12575929078080.

The previous prime is 31440231423067. The next prime is 31440231423103. The reversal of 31440231423100 is 132413204413.

It is a happy number.

It is a super-2 number, since 2×31440231423100² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31440231423103) 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, 5838274 + ... + 9847126.

Almost surely, 2^{31440231423100} is an apocalyptic number.

It is an amenable number.

31440231423100 is an abundant number, since it is smaller than the sum of its proper divisors (36785957705004).

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

31440231423100 is a wasteful number, since it uses less digits than its factorization.

31440231423100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087294 (or 4087287 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31440231423100 its reverse (132413204413), we get a palindrome (31572644627513).

The spelling of 31440231423100 in words is "thirty-one trillion, four hundred forty billion, two hundred thirty-one million, four hundred twenty-three thousand, one hundred".