31359145461 has 32 divisors (see below), whose sum is σ = 50423316480. Its totient is φ = 16947790464.

The previous prime is 31359145459. The next prime is 31359145463. The reversal of 31359145461 is 16454195313.

It is an interprime number because it is at equal distance from previous prime (31359145459) and next prime (31359145463).

It is not a de Polignac number, because 31359145461 - 2¹ = 31359145459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31359145463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321765 + ... + 407738.

It is an arithmetic number, because the mean of its divisors is an integer number (1575728640).

Almost surely, 2^31359145461 is an apocalyptic number.

It is an amenable number.

31359145461 is a deficient number, since it is larger than the sum of its proper divisors (19064171019).

31359145461 is a wasteful number, since it uses less digits than its factorization.

31359145461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729625.

The product of its digits is 194400, while the sum is 42.

The spelling of 31359145461 in words is "thirty-one billion, three hundred fifty-nine million, one hundred forty-five thousand, four hundred sixty-one".