31434434100131 has 4 divisors (see below), whose sum is σ = 31435700570064. Its totient is φ = 31433167630200.

The previous prime is 31434434100107. The next prime is 31434434100143. The reversal of 31434434100131 is 13100143443413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31434434100131 is a prime.

It is a super-2 number, since 2×31434434100131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31434434100101) 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, 633197735 + ... + 633247376.

It is an arithmetic number, because the mean of its divisors is an integer number (7858925142516).

Almost surely, 2^{31434434100131} is an apocalyptic number.

31434434100131 is a deficient number, since it is larger than the sum of its proper divisors (1266469933).

31434434100131 is a wasteful number, since it uses less digits than its factorization.

31434434100131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266469932.

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

Adding to 31434434100131 its reverse (13100143443413), we get a palindrome (44534577543544).

The spelling of 31434434100131 in words is "thirty-one trillion, four hundred thirty-four billion, four hundred thirty-four million, one hundred thousand, one hundred thirty-one".