31434434131 has 4 divisors (see below), whose sum is σ = 31565959200. Its totient is φ = 31302909064.

The previous prime is 31434434117. The next prime is 31434434177. The reversal of 31434434131 is 13143443413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13143443413 = 24917 ⋅527489.

It is a cyclic number.

It is not a de Polignac number, because 31434434131 - 2¹⁷ = 31434303059 is a prime.

It is a super-2 number, since 2×31434434131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31434434093 and 31434434102.

It is not an unprimeable number, because it can be changed into a prime (31434434111) 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, 65762176 + ... + 65762653.

It is an arithmetic number, because the mean of its divisors is an integer number (7891489800).

Almost surely, 2^31434434131 is an apocalyptic number.

31434434131 is a deficient number, since it is larger than the sum of its proper divisors (131525069).

31434434131 is a wasteful number, since it uses less digits than its factorization.

31434434131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131525068.

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

Adding to 31434434131 its reverse (13143443413), we get a palindrome (44577877544).

The spelling of 31434434131 in words is "thirty-one billion, four hundred thirty-four million, four hundred thirty-four thousand, one hundred thirty-one".