121431032204340 has 48 divisors (see below), whose sum is σ = 340009682927040. Its totient is φ = 32381342611200.

The previous prime is 121431032204333. The next prime is 121431032204459. The reversal of 121431032204340 is 43402230134121.

It is a super-2 number, since 2×121431032204340² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 121431032204298 and 121431032204307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 891385 + ... + 15609504.

It is an arithmetic number, because the mean of its divisors is an integer number (7083535060980).

Almost surely, 2^{121431032204340} is an apocalyptic number.

121431032204340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121431032204340 is an abundant number, since it is smaller than the sum of its proper divisors (218578650722700).

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

121431032204340 is a wasteful number, since it uses less digits than its factorization.

121431032204340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16623552 (or 16623550 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 121431032204340 its reverse (43402230134121), we get a palindrome (164833262338461).

The spelling of 121431032204340 in words is "one hundred twenty-one trillion, four hundred thirty-one billion, thirty-two million, two hundred four thousand, three hundred forty".