31434010021031 has 4 divisors (see below), whose sum is σ = 31545084261672. Its totient is φ = 31322935780392.

The previous prime is 31434010021027. The next prime is 31434010021061. The reversal of 31434010021031 is 13012001043413.

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

It is a cyclic number.

It is not a de Polignac number, because 31434010021031 - 2² = 31434010021027 is a prime.

It is a super-2 number, since 2×31434010021031² (a number of 28 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 = 31434010020988 and 31434010021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434010021061) 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, 55537119896 + ... + 55537120461.

It is an arithmetic number, because the mean of its divisors is an integer number (7886271065418).

Almost surely, 2^{31434010021031} is an apocalyptic number.

31434010021031 is a deficient number, since it is larger than the sum of its proper divisors (111074240641).

31434010021031 is a wasteful number, since it uses less digits than its factorization.

31434010021031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111074240640.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31434010021031 its reverse (13012001043413), we get a palindrome (44446011064444).

The spelling of 31434010021031 in words is "thirty-one trillion, four hundred thirty-four billion, ten million, twenty-one thousand, thirty-one".